Dota 2 - Night Stalker Build Guide

BIO
Of the Night Stalker, there is no history-only stories. There are ancient tales woven into the lore of every race and every culture, of an impossible time before sunlight and daytime, when night reigned alone and the world was covered with the creatures of darkness-creatures like Balanar the Night Stalker.

It is said that on the dawn of the First Day, all the night creatures perished. All, that is, save one. Evil's embodiment, Night Stalker delights in his malevolence. He created the primal role of the Night Terror, the Boogeyman, and as long as there have been younglings, his is the specter summoned to terrify them. This is a role he relishes-nor are these empty theatrics. He does indeed stalk the unwary, the defenseless, those who have strayed beyond the lighted paths or denied the warnings of their communities. Night Stalker serves as living proof that every child's worst nightmare....is true.

INTRODUCTION
He is one of the STR hero that can get kills easily on early-mid game. He have a powerful single target nuke and also have a mighty movement speed and attack speed. Oh and also don’t forget he also have a Silence that makes his enemy can’t escape. All of his skills are designed to make enemy can’t do anything while facing him. He can come from jungle easily and quickly, slowing the target, and also silencing the target. And then the target will move so slow and harassed by him until death, maybe death because his nuke, or his attacks.

PROS	CONS
Can easily solo killing a squishy hero	Low attack speed vs AGI carry on late game
High movement speed & attack speed at night	Doesn't have an AoE spell
High damage - Low cooldown nuke
Have a wide range vision at night

ROLE

Melee - Durable - Initiator - Chaser - Carry

STATS

LEVEL	1	15	25
HIT POINTS	587	1,332	2,244	SIGHT RANGE	1800 / 800
MANA	208	499	9	ATTACK RANGE	128
DAMAGE	57-61	96-100	144-148	MISSILE SPEED	N/A
ARMOR	6	10	16

ABILITIES
1. Void

Creates a damaging void that slows an enemy unit and deals damage. Void also mini-stuns, interrupting channeling abilities. The slowing effect lasts longer at night.

MANA COST: 80/90/100/110	COOLDOWN: 8
ABILITY: UNIT TARGET	AFFECTS: ENEMY UNITS
DAMAGE: MAGICAL	DAMAGE: 90 / 160 / 255 / 335
DAY DURATION: 2 / 2 / 2 / 2	NIGHT DURATION: 4 / 4 / 4 / 4
MOVE SLOW: 50% / 50% / 50% / 50%	ATTACK SLOW: 35% / 35% / 35% / 35%

Balanar creates a vortex of infinite night, tearing opponents violently into the eternal darkness that once was.
This is your main nuke. A single targetted - low cooldown nuke. You will spam this skill to a one unlucky target. On the early game, this skill is so painful for your enemy. You need to cast this immediately when it's off-cooldown. This way, your target cannot escape from you. Combined with your high movement speed (from your 3rd skill, and a silenced enemy (from your 2nd skill), you will kill your unlucky target easily.

2. Crippling Fear

Night Stalker horrifies the target enemy Hero, causing it to miss attacks and become silenced. The effect lasts longer at night.

MANA COST: 90/90/90/90	COOLDOWN: 12
ABILITY: UNIT TARGET	AFFECTS: ENEMY UNITS
DAY DURATION: 3 / 3 / 3 / 3	NIGHT DURATION: 5 / 6 / 7 / 8
DAY CHANCE TO MISS: 10% / 10% / 10% / 10%	NIGHT CHANCE TO MISS: 40% / 40% / 40% / 40%

A vision of the twisted maw of Balanar etches itself into the minds of the poor souls unlucky enough to cross his path.
Silence an enemy unit. This make you can attack your target comfortably without afraid of he will using his skills.

3. Hunter in the Night

Night Stalker is in his element at night, attacking and moving with great swiftness.

ABILITY: PASSIVE	MOVE SPEED: 20% / 25% / 30% / 35%
ATTACK SPEED: 30 / 45 / 60 / 75

The hunting prowess of Balanar improves as the night beckons.
With this, you become a very good chaser in Dota. You will gain lots of movement speed and also attack speed at night. So, if the day has turns into night, that;s your time to rock! Begin to roam around the map, and happily kill enemy's squishy hero. Start with your Silence, then Void, then just Right Click and silence again.

4. Darkness

Night Stalker smothers the sun and summons instant darkness, so that he might use his powers at their fullest. When used at night, it extends night time by Darkness' duration. Upgradable by Aghanim's Scepter.

MANA COST: 0/0/0	COOLDOWN: 180/150/120
ABILITY: NO TARGET	DURATION: 25 / 50 / 80

It is a humbling sight to see when the mightiest of warriors become afraid of the dark.
Because you will gain many advantages at night, this skill will be very useful for you. You will turn day into night for a certain period. In this skill duration, because of the natur of your abilities, you become more powerful, you get high movement speed, attack speed, vision, long Silence duration, and Long slow duration.

SKILLBUILD

Level 1: Void
Level 2: Hunter in the Night
Level 3: Void
Level 4: Crippling Fear
Level 5: Void
Level 6: Hunter in the Night   (Note: Here we doesn't take ultimate if it is still night time)
Level 7: Void
Level 8: Darkness
(Maybe here is the day is coming, so you need to take your Ultimate, or if it haven't day yet, you still can skip it)
Level 9 : Hunter in the Night
Level 10: Hunter in the Night
Level 11: Darkness
Level 12: Crippling Fear
Level 13: Crippling Fear
Level 14: Crippling Fear
Level 15: Stats
Level 16: Hunter in the Night
Level 17-25: Stats

Why maxed Void first?  This is your main nuke, you will need this for ganking and killing or early mid game. This skill have a high damage and also spammable. a very recommended skill.

Why maxed Hunter in the Night before Crippling Fear?  Crippling Fear level 1 is enough. Moreover, your attack speed and damage is needed to gank enemy on early-mid game. Recommended for you to take Hunter in the Night before Crippling Fear.

STRATEGY
Early Game
Balanar is a hero that get his real power at night. He should wait until day ends to operate and start ganking. On the first few minutes of the game, it is recommended for you to wait the night time with farming creeps calmly. At least, you should already have boots in the first night of the game.

Mid Game
Balanar is a carry-chaser hero that can easily get kills on early game. He mainly uses void and high movement speed to get some easy kills. You should maxed your Void first so you can spam it to get some easy kills on early mid game. Just use Void on a squishy hero and his Hp are already 60%, and after that he will be slowed, and you also have a Silence t make your target can’t do skills.  So he just can wait until his death. Just right click your hopeless target, and after your Void is off cooldown use it again to assure the kill.
After you already use lots of your mana, you need to go back to fountaain an refill your mana, you need mana mainly for spamming Void and get some easy kills.

Late Game
On late game, if you have Aghanim Scepter, you should lead your team through the fog of war. You have a very long distance of visibility that will helps team to scouts the fog area. You are Balanar, you become a beast at night, Lead your friend and if you accidentaly found someone in the fog of war, immediately cast Silence on him and your friends should come immediately to kill him. You have the potential of becoming a carry, maybe you can buy some carry items like Cuirass, Mkb etc.

ITEMBUILD
1. In early Game, I recommend you to buy Boots of Speed
Cost: 450

Flat movement speed bonuses from multiple pairs of boots do not stack. + 50 Movement Speed

Why Boots of Speed? You need to start killing from the first night, you need the movement speed to out run your enemy.

2. Bracer
Total Cost: 525
Recipe: Circlet + Gauntless of Strength

+ 6 Strength         + 3 Agility + 3 Intelligence    + 3 Damage

Bracer is good for survivability in early game. This will adds damage too.

Upgrade your shoes into a more powerful Boots:
3. Power Threads
Total cost: 1400
Recipe: Gloves of Haste, Boots of Speed, Belt og Giant Strength/ Robe of Magi/ Band of Elvenskin

Active: Switch Attribute - Changes selected attribute between Strength, Agility and Intelligence. Flat movement speed bonuses from multiple pairs of boots do not stack. + 55 Movement Speed + 8 Selected Attribute   + 30 Attack Speed

Why Power Threads? It will gives you attack speed, thats what you need, attack speed and damages. Power threads is laso a flexible shoes, you can change it to STR, AGI, or INT for what you need.

? Item: Arcane Boots ??
Total cost: 1450
Recipe: Boots of Speed + Energy Booster

Active: Replenish Mana - Restores mana in an area around the hero. Flat movement speed bonuses from multiple pairs of boots do not stack. + 60 Movement Speed   + 250 Mana MANA RESTORED: 135 Mana Needed: 25    Cooldown: 55

Why Arcane Boots? With Arcana Boots, you can fill your mana for your skill and spam Void whenever you want. This will makes you can get kill by relying on your Void on early game. You buy this with the cost of attack speed, or even damage if you prefer Phase Boots. But if you succeeded by getting lots of kills, then you can buy some nice items for the late game.
But this item will provoking your team to blame you because Power Threads is considered better from the community views.

For the sake of the team, buy:
4. Aghanim Scepter,

Passive: Ultimate Upgrade - Upgrades the ultimates of certain heroes. + 10 All Attributes   + 200 Health   + 150 Mana

Why Aghanim's Scepter? The radius of your Sight at Night will increase dramatically, this way, your team can roam and find a weak target and catch him.
Also make you can know enemy that will gank you so you can run before they arrive at your place.

Usually people buy this:
5. Black King Bar
Total cost:: 3900
Recipe: Ogre Axe, Mithril Hammer, Recipe

Active: Avatar - Grants magic immunity. Duration and cooldown decrease with each use. Some Ultimate abilities are able to disable through Black King Bar. + 10 Strength + 24 Damage     DURATION: 10/9/8/7/6/5     Cooldown: 80

Why Black King Bar? It gives you survivability in a teamfight because you will get magic immunity during teamfight.

Now, what's next:
It is recommended for you to go full damage and attack speed so you may like this kind of items:
6. Battlefury
Total Cost: 225
Recipe: Broadsword, Claymore, Preserverance

Passive: Cleave - Deals a percent of attack damage in a 225 AoE around the target. Does not work on ranged heroes. Cleave damage on non-primary targets is not reduced by armor values. + 65 Damage + 6 HP Regeneration     + 150% Mana Regeneration      CLEAVE DAMAGE: 35%

Why Battlefury? It is your job to deal a damage to all of the enemy. This items gives you an AoE attack that will deal damage to all the enemy.

7. Assault Cuirass
Total cost:: 5300
Recipe: Platemail, Hyperstone, Chainmail, Recipe

Passive: Assault Aura - Grants attack speed and armor to nearby allied units, and decreases armor for nearby enemies. Multiple instances of Assault Aura do not stack. + 35 Attack Speed     + 10 Armor       AURA ATTACK SPEED: 20 AURA BONUS ARMOR: 5                ARMOR REDUCTION: 5

Why Assault Cuirass?
Increase attack speed that makes your damage flowing rapidly, it is very good because you also gives you +Aura for the team that is very important for late game,
it will increase your team's defense by a lot.
- Aura for the enemy:
Will make your enemy to suffer more from your teams damage.

8. You can increase your DPS more. Choose your own DPS items.As a carry, damage is your priority.

	DAEDLUS	MKB	ABYSSAL	DIVINE RAPIER
DAMAGE	81	88	100	300
ABILITY	CRITICAL 2.4	100% HITS	STUN	NONE
CHANCE	25%	MINIBASH 35% DAMAGE: 100	MELEE: 25 % RANGE: 10%	NONE
OTHER	NONE	+15 ATK SPEED	+10 STRENGTH 2 SEC STUN	NONE

DAEDLUS: Daedlus will provide you with the a powerful Critical Strike.

MKB: 100% HITRATE will helps you to fight some evasion heroes like Mortred or Rikimaru.

ABYSSAL: A decent +100 damage and makes you become a Stunner

RAPIER: Be careful if you choose to hold this. 1 hit kill is a sure. 2-3 hits is the worst. Need protection from your support. Must come if the situation is clear safe for you to come inside the teamfight. Need disabler friends.

And also don't forget about:
2 items that is "a must have" for late game:
9. Heart of Tarrasque
Total cost: 5500
Recipe: Reaver + Vitality Booster

Passive: Health Regeneration - Restores a percentage of max health per second. This ability is disabled if damage is taken from an enemy Hero or Roshan within the last 4 seconds if your hero is melee or 6 seconds if your hero is ranged. + 40 Strength   + 300 Health     HEALTH RESTORED: 2%    Cooldown:

Why Heart of Tarrasque? It helps you survive in hard late game teamfights. Who can survive, is the winner!

10. Boots of Travel
Total cost: 2450
Recipe: Boots of Speed + Recipe

Active: Teleport - Teleports you to an allied non-hero unit or structure. Flat movement speed bonuses from multiple pairs of boots do not stack. + 100 Movement Speed Manacost: 75   Cooldown60

Why Boots of Travel? With the creeps becoming more powerful in pushing your base, you need fast teleport to save your Ancient.
Also, this item will give you 1 free slot that is saved for Teleport Scroll if you don't have this Boots

And for the late game, for more survivability, you should buy this:
11. Satanic
Total Cost: 5850

Recipe: Tarrasque + Helm of the Dominator + Recipe 

Active: Unholy Rage - Increases Lifesteal by 175% for 3.5 seconds. Passive: Lifesteal - Gives Lifesteal on attacks. Satanic is a Unique Attack Modifier, and does not stack with other Unique Attack Modifier. + 20 Damage    + 25 Strength    + 5 Armor    LIFESTEAL: 25%   Cooldown: 35

Why Satanic? It will really helps you to survive in a hard condition in a teamfight. It will gives you lifesteal, Strength, and Armor, thats all what you need to survive in a teamfight. If your HP become low, immediately use unholy rage, and attacks your enemy and your HP will be full again in seconds.

GOOD ALLIES
1. Supportive Heroes
(Example: Shadow Shaman, Crystal Maiden, Vengeful Spirit)

Supportive heroes have disables and nice skill to helps carries and makes a teamfight easier for the team.

Shadow shaman: Have hex, shackles, and wards to helps you disables enemy

Crystal Maiden: Have 1 lockdown, 1 slower, and have +mana regeneration

Vengeful Spirit: Have stun, swap, and +damage aura

2. Ranged-Carries
(Example: Clinkz, Drow Ranger, Sniper, Nevermore, Weaver)

You need to combine your decent slowing ability with their damage. It will be so powerful to crush opponents. Your silence is also powerful and make them can attack enemy pleasantly.

ANNOYING ENEMY
1. Observer Ward

Why this item is becoming your most annoying enemy? If they place this in the vital spot where you will run to kill them, then they will know your presence and immediately retreat, it will very harm you.

2. Enemy that have lots of Hp and high survivability, and powerful that you will have a hard time solo killing them
(Example: Ursa, Centaur, Naix)

 Your damage maybe isn't enough to solo kill them, maybe if you want to solo kill heroes that have lots of HP like them, you can get killed, so be careful.

VIDEO SECTION
1. Dota Guide of Night Stalker

Watch this and learn to play using Balanar. A nice tutorial on how to kill people with Balanar.

2. Another Guide of Night Stalker 

If you want to play with this hero, nothing wrong with checking every guide on the internet.

FANART

Dota 2 - Doom Bringer Build Guide

BIO
He that burns and is not consumed, devours and is never sated, kills and is beyond all judgment-Lucifer brings doom to all who would stand against him. Bearing away souls on the tip of a fiery sword, he is the Fallen One, a once-favored general from the realm behind the light, cast out for the sin of defiance: he would not kneel.

Six times his name was tolled from the great bell of Vashundol. Six and sixty times his wings were branded, until only smoking stumps remained. Without wings, he slipped loose from the tethers that bound him within the light and he fell screaming to earth. A crater in the desert, Paradise lost. Now he attacks without mercy, without motive, the only living being able to move freely between the seven dark dominions. Lashed by inescapable needs, twisted by unimaginable talents, the Doom Bringer carries his own hell w

INTRODUCTION
Doom Bringer is a hero that can be a good nuker and can also be a good DPS-er. He can also be a good chaser and ganker. He is very flexible. He can acquire Neutral Creep’s skill for the team’s benefit. Maybe you can add +damage and Critical Strike with consuming Alpha Wolf. Or you can get +movement speed or slower attack from consuming certain creeps. Centaur Creeps will makes you get 2 second stun for area around you or Troll Creeps can make you get some skeleton underlings. For DPS er and team’s benefit, I recommend you to get Alpha Wolf and increase team’s damage and get critical strike for yourself. With 3 out of 4 of his skills gives magical damage. He is a decent nuker that can deal thousands of magical damage.ith him wherever he goes. Defiant to the last. Eventually, the world will belong to Doom.

ROLE

Melee - Durable - Carry - Nuker

STATS

LEVEL	1	15	25
HIT POINTS	644	1,495	2,483	SIGHT RANGE	1800 / 800
MANA	169	551	1084	ATTACK RANGE	150
DAMAGE	53-69	98-114	150-166	MISSILE SPEED	N/A
ARMOR	0	1	5

ABILITIES
1. Devour

Consumes an enemy or neutral creep, acquiring any special abilities that it possessed.

MANA COST: 60/50/40/30	COOLDOWN: 70/60/50/40
ABILITY: UNIT TARGET	BONUS GOLD: 25 / 50 / 75 / 100

Lucifer's appetite and greed are never sated.
This skill will boost your golds and makes you rich faster than your friends or enemies. This skill also makes you get skill from neutral creeps you consumed. There are varieties of creeps in DotA and you can gets all their skills. Several creeps have some nice abilities that gives some benefits for your team.
Centaur: a. 2 Seconds stun in AoE around you, 50 damage
              b. +15% Attcak Speed
Alpha wolf: a. 20% Critical Strike 2x times normal damag
                 b. +30% Damage Aura
Ice Ghost: Frost Slowing Attack
Satyr Trickster (Small ones): Purge, Manacost: 150
Satyr Hellcaller: a. + 3 HP Regeneration / sec Aura
                        b. Shockwave (100 mana, 8 sec CD) that deals 100 damage to area in front of you
Kobold: +Movement Speed Aura
Dark Troll:  a. Ensnare.
                 b. Raise small skeleton form corpse
Enraged Wildkin: a. Tornado
                          b. +3 Armor Aura

Furbolg Ursa - 150 damage thunder clap (4 sec slow)
Blue Harpy - chain lightning
Gnoll - poison + slow attack
Blue Ogre - frost armor (8)
Medium satyr - mana burn
Forest Troll High Priest: Heal 15 HP with 5 mana

2. Scorched Earth

Carpets the nearby earth in flames, damaging enemies while Doom Bringer gains bonus HP regen and increased movement speed.

MANA COST: 60/65/70/75	COOLDOWN: 60/55/50/45
ABILITY: NO TARGET	DAMAGE: MAGICAL
DAMAGE/REGEN: 12 / 18 / 24 / 30	RADIUS: 600 / 600 / 600 / 600
BONUS MOVE SPEED: 16% / 16% / 16% / 16%	DURATION: 10 / 12 / 14 / 16

The Fallen One spreads destruction in his wake, sparing none from the flame which sustains him.
This skill will be useful for farming creeps. You can last hits some creeps together. This skill also very useful in chasing a running foe’s. You get additional movement speed so you can chase enemies and makes him cannot run from you. Phase boots, and +move speed from dovoured creeps can makes your movement speed untouchable to enemies and can chase everyone running from your team. Your killing tactic should be: 1. Doom one target, 2. Use Lvl death and right click, 3. Chase with Scorched earth an additional movement speed from anything you have, phase, or from creeps, or from drums. You 90% can chase your target and kill him

3. LVL? Death

Dissipates a piece of an enemy Hero's soul, mini-stunning and dealing bonus damage equal to 20% of the target's maximum health when the enemy's level is a multiple of a specific number or 25.

MANA COST: 110/110/110/110	COOLDOWN: 8
ABILITY: UNIT TARGET	AFFECTS: ENEMY HEROES
DAMAGE: MAGICAL	DAMAGE: 125 / 175 / 225 / 275
LEVEL MULTIPLIER: 6 / 5 / 4 / 3	DURATION: 10 / 12 / 14 / 16

Lucifer shares the fire branding bestowed upon him at the time of his exile.
Your very nice nuke that will deal lots of damage to single targetted enemy. There will be a bonus damage if the opponent is on a certain level. Bonus damage is 20% from the maximum health. This will make you to deal a decent dmage to the enemy. If your enemy is below 20% health, he will be instantly death if his level is right. 20% health as an additional damage is no joke, this will deal 575 damage for 1500 hp’s enemy and his level is a multiplier of 3 or 25 and this skill level is level 4. This is almost the same as Laguna Blade(the strongest instant single targetted nuke in DotA). And this is not even your ultimate.

4 / Ultimate: Doom

Inflicts a curse that prevents an enemy Hero from casting spells or using items, while taking damage over time. Doom also disables most passive abilities. Upgradable by Aghanim's Scepter.

MANA COST: 150/200/250	COOLDOWN: 110
ABILITY: UNIT TARGET	AFFECTS: ENEMY UNITS
DAMAGE: MAGICAL	DURATION: 15 / 15 / 15
DAMAGE PER SECOND: 30 / 50 / 70	SCEPTER DURATION: 16 / 16 / 16
SCEPTER DAMAGE PER SECOND: 50 / 80 / 110

When a name is tolled from the bell of Vashundol, doom is sure to follow.
This is your ultimate. Makes a single targetted enemy can’t use skills or items. He will also taking damages per second. He can just run or attacking with right click. This skill will makes that receive this skill to be doomed. There is just 2 options for him, to run or to right click. This will makes your team can attck the target conveniently without getting skilled by the doomed enemy. Very powerful. You need to target this skill to a dangerous opponent that have deadly spells, maybe Void that have Chrono Sphere, or Rhasta that have 4 active annoying skills, or someone dangerous.

SKILLBUILD

1. Full Farming-Chasing Build
With this build, you will be the fastest to earn gold in the map. This build focused on Devour and Scorched Earth to earn gold fast, you can also buy Midas and Radiance to boost your gold more. Scorched Earth will increase your movement speed that helps you chase enemies.
Level 1: Devour
Level 2: Scorched Earth
Level 3: Devour
Level 4: Scorched Earth
Level 5: Devour
Level 6: Doom
Level 7: Devour
Level 8: Scorched Earth
Level 9: Scorched Earth
Level 10: Lvl? Death
Level 11: Doom
Level 12: Lvl? Death
Level 13: Lvl? Death
Level 14: Lvl? Death
Level 15: Stats
Level 16: Doom
Level 17-25: Stats

Why maxed Devour first? Your intention is to gain gold as much and as fast as possible. You need this skill to boost your gold. Not just that, this skill makes you can absorbs Neutral’s ability. This will helps you in farming in early game. And that skills will helps you in ganking and teamfights. Helps you in jungling or laning.

If you want to boost your gold, always devour to every creeps when its off cooldown, don’t keep skill too long that you already meet big creep that will gives you lots of golds or don’t wait until you see the creeps with a good skill if it will takes long time. Time is so imortant in farming. The faster you farm, the stronger you are than your opponents.
Finding the right creeps is needed if you want to get ready immediately for ganks or teamfights. Know the perfect timing for gaining skills, or know the perfect timing for farming.

Why maxed Scorched Earth before Lvl?Death? Scorched earth will be useful for faster farming because of it’s DPS. This skill will also helps you to regenerate HP faster and makes you always healthy in early game when you need to farms while being harassed. Helps you in jungling or laning.

2. Full Nuker Build
This will make you a fearceful nuker. You have big damages. And can kill enemy instanty. Maybe you will need Arcane boots to boost your mana.
Level 1: Lvl? Death
Level 2: Scorched Earth
Level 3: Lvl? Death
Level 4: Scorched Earth
Level 5: Lvl? Death
Level 6: Doom
Level 7: Lvl? Death
Level 8: Scorched Earth
Level 9: Scorched Earth
Level 10: Devour
Level 11: Doom
Level 12: Devour
Level 13: Devour
Level 14: Devour
Level 15: Stats
Level 16: Doom
Level 17-25: Stats

Why maxed Lvl?Death first? This is your deadly nukes, you need this for your nuker build. This will deal lots of damages in early game.

Why maxed Scorched Earth before Devour? This is a total nuker build, Scorched Earth will helps you deal more damage in early-mid game. If you want more gold you can level up Devour 1 or 2 levels.


STRATEGY
Early Game
Doom have 2 options in early game. He can jungling or he can laning. The option you choose will determine how you should play. If you choose to jungle, you must take Devour first, this will helps you to kills more
creeps. You can kill one big creeps like Centaur creep with this skill, and then absorb it's skill. Your new creep's skill will helps you in jungling, Alpha Wolf skill will increase your damage and gives you critical, or Satyr Hellcaller will gives you HP regen.
Midas will really helps you to gain golds faster. Midas will faster your jungling too. Midas will makes you faster in leveling because you will get 2.5 exp from creeps you midas.
Laning with doom is also not hard. If you are having a hard time in last hitting, you can still gain golds with Devour. If your HP is low, you can regenerate using Scorched Earth. You can also absorbs 1 creeps skill before laning to make you easier in laning phase, maybe Satyr Hellcaller that helps you with more HP regeneration, or Alpha Wolf that helps you with more damage for lasthits, or Ogre Magi that helps you with additional armor .

Mid Game
In mid game you can either participate in your team's activities of ganking and teamfights, or you can keep jungling and farming in lane. This is based on your type. You are a Carry Type or a Supportive-Nuker Type.
You can keep farming if you want to chase Radiance that will be very useful in teamfight in mid-late game. Or you can participate in teamfight to cast some Doom, Lvl Death, and Scorched Earth.

Your part in the game also decided from what creeps you consume. Like if you consume Alpha Wolf, you better become a physical damage dealer and buying some physical DPS items like Mkb or it's friends.
If you want to be the real chaser, you must consume Kobold and get some +movement speed. With +movement speed from Boots, Scorched Earth, and Kobold Aura, you will reach a skyhigh movement speed that can chase everything, maybe you can do some race with Barathrum or Weaver.

Late Game
Late game will really depends on your type. Doom is a very flexible hero. He can become a good nuker, he also can be a good carry. If you choose to be a nuker, late game items like Aghanim and Refresher will make you can Doom 2 enemies, that will be very annoying for them, 2 of their heroes will be doomed and your team can comfortably kill them all.
If you choose to be a good carry, you can buy Radiance, and also Cuirass, or even Battlefury will fit your playstyle as a carry. Don't forget Alpha Wolf that will gives you bonus damage and critical strike.
Usually you can buy Shiva's too that can helps you to be a decent chaser, because Shiva's will slow down enemies.

ITEMS BUILD
A. Carry-Chaser Build
1.  Hand of Midas
Total cost: 1400
Recipe: Gloves of Haste + Recipe

Active: Transmute - Kills a non-hero target for 190 gold and 2.5x experience. Cannot be used on Ancients. + 30 Attack Speed Cooldown   100

Why Hand of Midas? It will boost your golds and exp so you can be the richest in the maps. Will makes you  can wipe out jungle quickly.

2. Phase Boots
Total Cost: 1350
Recipe: Boots of Speed + 2 x Blades of Attack

Active: Phase - Gives increased movement speed and lets you move through units. Phase is cancelled upon using another item or ability. Flat movement speed bonuses from multiple pairs of boots do not stack. PHASE DURATION: 4 PHASE MOVE BOOST: 16%    + 55 Movement Speed    + 24 Damage Cooldown: 8

Why Phase boots? Gives you attck damage, and gives phase skill(+ms and can walk through creep/heroes).

3. Vanguard
Total cost: 2225
Recipe: Ring of Health + Vitality Booster + Stout Shield

Passive: Damage Block - Gives a chance to block damage, depending on the type of hero you are. + 250 Health    + 6 HP Regeneration    BLOCK CHANCE: 70% RANGED BLOCK: 20    MELEE BLOCK: 40

Why Vanguard? Will reduce physical attacks damage. So good for a tank damages in farming and really helps in a teamfight against some physical attacks.

4.  Radiance
Total cost: 5150
Recipe: Sacred Relic + Recipe

Active: Toggles Burn Damage on or off. Passive: Burn Damage - Deals damage per second in a 650 radius. + 60 Damage BURN DAMAGE: 45

Why Radiance? Helps yo to deal some constant damage in teamfights. Also helps in farming creeps.

6. Shivs's Guard
Total cost: 4700
Recipe: Plate Mail + Mystic Staff + Recipe

Active: Arctic Blast - Emits a freezing wave that does 200 damage to enemies and slows their movement by -40% for 4.0 seconds. Passive: Freezing Aura - Reduces attack speed on enemies. Multiple instances of Freezing Aura do not stack. + 30 Intelligence   + 15 Armor AURA SLOW: 25% Manacost: 100   Cooldown:   30

Why Shiva's? Helps you chase enemies faster because this item will slow down your target. + Arctic Blast (More Slow and 200 damage)

If You want more and more high DPS Physical damage, then you should be items like:

7. Assault Cuirass
Total cost:: 5300
Recipe: Platemail, Hyperstone, Chainmail, Recipe

Passive: Assault Aura - Grants attack speed and armor to nearby allied units, and decreases armor for nearby enemies. Multiple instances of Assault Aura do not stack. + 35 Attack Speed     + 10 Armor       AURA ATTACK SPEED: 20 AURA BONUS ARMOR: 5                ARMOR REDUCTION: 5

Why Assault Cuirass?
+Armor aura and -Armor for enemies  are very important for late game, so good for increasing team's defense and increasing team's attack because of the -armor for enemies.

9. Battlefury
Total Cost: 225
Recipe: Broadsword, Claymore, Preserverance

Passive: Cleave - Deals a percent of attack damage in a 225 AoE around the target. Does not work on ranged heroes. Cleave damage on non-primary targets is not reduced by armor values. + 65 Damage + 6 HP Regeneration     + 150% Mana Regeneration      CLEAVE DAMAGE: 35%

Why Battlefury? Makes you faster in farming creeps. Makes your gold flow faster.

10. MKB
Total cost:: 5400
Recipe: Demon Edge + 2x Javelin

Passive: Mini-Bash - Gives a chance to minibash and deal bonus damage. Passive: True Strike - Prevents your attacks from missing.  + 88 Damage    + 15 Attack Speed CHANCE TO MINI-BASH: 35%      MINI-BASH DAMAGE: 100

Why Monkey King Bar?
Good Damage. It will give you 100% hit rate. Fit for all carry's build

B. Nuker Build
1. Arcane Boots
Total cost: 1450
Recipe: Boots of Speed + Energy Booster

Active: Replenish Mana - Restores mana in an area around the hero. Flat movement speed bonuses from multiple pairs of boots do not stack. + 60 Movement Speed + 250 Mana MANA RESTORED: 135 Mana Needed: 25    Cooldown: 55

Why Arcane Boots? It will meake your skills spammable in every situation. And restores mana for allied heroes.

2. Aghanim's Scepter
Total cost:: 4200
Recipe: Point Booster, Ogre Axe, Staff of Wizardy, Blade of Alacrity

Passive: Ultimate Upgrade - Upgrades the ultimates of certain heroes. + 10 All Attributes   + 200 Health   + 150 Mana

Why Aghanim's Scepter?
It will decrease your Doom's damage. Will be the most deadly spell in DotA.

5. Refresher Orb
Total cost: 5300
Recipe: Obilivion Staff + Preserverance + Recipe

Active: Reset Cooldowns - Resets the cooldowns of all your items and abilities. + 5 HP Regeneration + 200% Mana Regeneration + 40 Damage + 6 Intelligence Manacost: 375   Cooldown: 160

Why Refresher? 2 Times Ultimate, your teamfights will be able to Doom 2 enemies. That means there will be only 3 heroes that can use their skills and items. So good to lock down tenemies and shut them up.

6. Shivs's Guard
Total cost: 4700
Recipe: Plate Mail + Mystic Staff + Recipe

Active: Arctic Blast - Emits a freezing wave that does 200 damage to enemies and slows their movement by -40% for 4.0 seconds. Passive: Freezing Aura - Reduces attack speed on enemies. Multiple instances of Freezing Aura do not stack. + 30 Intelligence   + 15 Armor AURA SLOW: 25% Manacost: 100   Cooldown:   30

Why Shiva's? Helps you chase enemies faster because this item will slow down your target. + Arctic Blast (More Slow and 200 damage)

7.  Schyte of Vyse
Total cost: 5675
Recipe: Mystic Staff + Ultimate Orb + Void Stone

Active: Hex - Turns a target unit into a harmless critter for 3.5 seconds. Destroys illusions. + 10 Strength   + 10 Agility  + 35 Intelligence + 150% Mana Regeneration Manacost: 100   Cooldown: 35

Why Schyte of Vyse? Very good item to initiate a teamfight.

GOOD ALLIES
1. Bloodseeker

Doomed and Ruptured, how bad is that? Just wait for your death.

2. Supportive Heroes
(Example: Shadow Shaman, Crystal Maiden, Vengeful Spirit)

Supportive heroes have disables and nice skill to helps carries and makes a teamfight easier for the team.

Shadow shaman: Have hex, shackles, and wards to helps you disables enemy

Crystal Maiden: Have 1 lockdown, 1 slower, and have +mana regeneration

Vengeful Spirit: Have stun, swap, and +damage aura

2. Carries
(Example: Magine, Void, Luna)

Carries should come after you initiate a teamfight, and they should the right click and use all their skills to the enemies.

ANNOYING ENEMIES

1. Cloners

(Example: Phantom Lancer, Naga Siren, Chaos Knight )

 

You have a single targetted ultimate which is required to know which one is your real target, and cloners can makes you to waste your ultimate if you choose the wrong target. You also have Lvl?Death that is a single targetted skill.