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Alchemist minimap icon.png Alchemist is a formidable carry capable of amassing large amounts of gold, and sustaining himself very well during teamfights. Despite his weak laning stage, if left alone he can have a huge item advantage over any hero in all of Dota 2 resulting in him being very scary if given a good laning phase. Unstable Concoction scales very well with both the stun duration and damage, although not entirely reliable. Acid Spray allows Alchemist to cover areas in spray, dealing physical damage and marking territory for him to fight in. Under Chemical Rage, Alchemist will have big health regeneration and attack speed bonuses, making him one of the most dangerous heroes to leave unchecked.
Pros Cons
  • Capable of making huge leads.
  • Reliable carry for the early mid game.
  • Takes good advantage of space created by teammates.
  • Good pushing.
  • Useless when playing from behind.
  • Dying can really set off the game.
  • Highly reliant on his ultimate.
  • Percentage damage is a nightmare to go against.
  • Worst attribute growth in the game.


  • Greevil's Greed helps Alchemist farm key items like Radiance (Active) icon.png Radiance and Assault Cuirass icon.png Assault Cuirass. Acid Spray is also leveled early to aid in clearing creep waves, especially if Alchemist goes solo in lane. A successful player aims to overwhelm the opposing team during the mid game, when Chemical Rage makes Alchemist hard to kill.
  • Alchemist has a choice of investing in physical attacks with damage items and talents.
    • Or, he can rely on Unstable Concoction buffed with talents and Octarine Core icon.png Octarine Core to deal physical damage and provide long disables.
      • Octarine Core icon.png Octarine Core lowers cooldown on Chemical Rage to boost his survivability. He can also uses Manta Style icon.png Manta Style more often to dispel disables, like silence, and dodge self-exploded Unstable Concoction.


Alchemist is sometimes played as a support. This build requires him throw out stuns with Unstable Concoction, and zone out enemies with Acid Spray. A support Alchemist is expected to purchase wards. Due to the extra gold from Greevil's Greed, support Alchemists can still transition into damage dealers in the late game. Some players may opt to farm an Aghanim's Scepter icon.png Aghanim's Scepter for their teammates, but it should be noted carry Alchemist is much stronger currently.

Ability Builds[edit]

Generic Alchemist
Greevil's Greed icon.pngAcid Spray icon.pngGreevil's Greed icon.pngAcid Spray icon.pngAcid Spray icon.pngChemical Rage icon.pngAcid Spray icon.pngGreevil's Greed icon.pngUnstable Concoction icon.pngTalent icon.pngGreevil's Greed icon.pngChemical Rage icon.pngUnstable Concoction icon.pngUnstable Concoction icon.pngTalent icon.pngUnstable Concoction icon.pngUnknown icon.pngChemical Rage icon.pngTalent icon.pngTalent icon.png


Hero Talents
+40 Chemical Rage Regeneration25+50 Chemical Rage Movement Speed
+350 Unstable Concoction Damage20+30% Cleave
+20 Damage15+350 Health
-6s Unstable Concoction Cooldown10+15 Attack Speed
  • This attack damage talent is added as raw attack damage, so it does not benefit illusions, and is not affected by most percentage-based damage increasing or reducing effects.
  • The health talent increases maximum health capacity, and keeps the current health percentage.
  • The cleave has a starting radius of 150, distance of 650, and end radius of 360. For more information, see cleave.

Tips & Tactics[edit]

  • Getting talents to upgrade Unstable Concoction is a very good idea when ahead since no one will have as much physical survivability and makes jumping targets much easier.
  • Trying to end games when 6 slotted is a very good idea also, since Alchemist is usually not the hardest carry in a game.
  • Alchemist's Chemical Rage health regeneration is very strong early against heroes such as Zeus minimap icon.png Zeus and Viper minimap icon.png Viper who have very limited burst damage.
  • Stacking jungle camps or farming two camps at once is a very good idea to take advantage of your higher gold input.
  • Remember to be killing creeps consistently as a carry Alchemist, or you will not gain a big enough lead to take over the game.


  • Alchemist is a fairly heavy carry, but may still have trouble dealing with other hard carries, such as Faceless Void minimap icon.png Faceless Void later in the game.
  • Alchemist is one of the fastest farming heroes in the game, but that does not mean no one can match his farming capability. Heroes such as Sven minimap icon.png Sven and Lifestealer minimap icon.png Lifestealer can pose a threat if given space.
  • Alchemist is capable of ending games six slotted much faster than most heroes if he keeps his farming pace.


Acid Spray[edit]

  • Use Acid Spray to farm in lane if your opponents are harassing you heavily.
  • Acid Spray is useful in farming creeps. Ask a support to stack camps for you.
    • It is possible for Alchemist to safely farm ancient creeps early on with Acid Spray. Combined with Greevil's Greed, this can give Alchemist incredible amounts of gold over time. It is not uncommon to have expensive items like Radiance (Active) icon.png Radiance or Mjollnir icon.png Mjollnir by 14 minutes with this strategy.
    • Acid Spray can also be used to stack creeps from a distance. Using it on creeps will cause them to automatically pursue Alchemist, and therefore move away from the camp.
  • Use Acid Spray to dissuade enemies from defending their towers, or pushing into yours.
  • If playing mid, use Acid Spray to push the wave before you pick up the rune every five minutes.

Unstable Concoction[edit]

  • One point in Unstable Concoction is usually enough until other abilities have been leveled.
  • This ability deals physical damage so is amplified with Acid Spray.
  • Smart opponents can make it difficult to land Unstable Concoction by juking and avoiding your vision, causing the backfire. It may be better to use it immediately when an enemy reaches the treeline, even if you lose damage and stun duration.
  • Enemies will attempt to disable Alchemist while Unstable Concoction is brewing, preventing him from throwing it and causing him to suffer a long stun in addition to the first enemy disable. Try to stay out of reach until you are ready to throw Unstable Concoction.
  • Fully brewed, Unstable Concoction is one of the most potent stuns in the game, in both damage and stun duration. The enemy is able to see your timer. It is imperative that you either start channeling within range, or channel a few seconds of the concoction from within fog before revealing yourself.
  • If you are in a tight spot and have no way to escape with low health, Unstable Concoction can be used to deny yourself.
  • It may not be a good idea to charge Unstable Concoction if you believe you are about to lose vision of an enemy (such as when chasing through trees), as you could end up stunning yourself.
  • Begin charging Unstable Concoction before using Shadow Blade icon.png Shadow Blade or Silver Edge icon.png Silver Edge to take enemies by surprise.
  • Unstable Concoction can be used to deny yourself. If you find yourself in a sticky situation with Chemical Rage on cooldown and no means of escape, you can channel this spell in the hopes of denying yourself.

Greevil's Greed[edit]

  • Greevil's Greed increases Alchemist's gold income right from the start of the game.
  • Alchemist does not have to collect Bounty Rune minimap icon.png Bounty Rune himself to gain bonus gold.
  • Thus, his team getting two initial bounty runes already puts himself ahead in networth.
    • As a result, Alchemist's team may want to contest the enemies' bounty runes throughout the game to gain even more income for themselves and for Alchemist especially.
  • Don't be too quick to skill this ability immediately when the match starts. You should invest the your first point into this ability only if you can guarantee that you will claim the runes, as if your opponents happen to steal it from you, you will be at a severe disadvantage during the early laning stages, as Alchemist's melee range, poor damage, and attack speed may hinder his ability to get last hit.

Chemical Rage[edit]

  • Chemical Rage dispels, and disjoints projectiles, but can be difficult to time properly.
  • Feel free to use Chemical Rage for its healing effects.
  • This ability makes Alchemist very hard to kill early on and allows him to take stacked camps, even Ancient camps.
  • Chemical Rage scales strongly with attack damage boosting items, however at the same time Alchemist does little damage without such items.
  • The base attack time change of Chemical Rage does not alter the value of attack speed, neither up nor down. You still want to have a good mix of items that give attack speed and damage.


Starting items:

  • Tango icon.png Tango regenerates health so Alchemist can survive the lane.
  • Healing Salve icon.png Healing Salve restores health also.
  • Iron Branch icon.png Iron Branch is cheap and gives small attribute bonuses.
  • Enchanted Mango icon.png Enchanted Mango gives health regeneration, and burst mana to use Acid Spray.

Early game:

Mid game:

  • Power Treads icon.png Power Treads increase attack speed and strength to help Alchemist obtain last hits. The bonus intelligence helps him use more Acid Spray in the early to mid game.
  • Armlet of Mordiggian (Inactive) icon.png Armlet of Mordiggian works well with Chemical Rage's health regeneration, countering the item's health draining effect.
  • Radiance (Active) icon.png Radiance is a good pickup since Alchemist can get it quickly with Greevil's Greed, when the burn damage hurts the most. It deals heavy damage to the enemy team, as Alchemist can stay alive for prolonged periods with Chemical Rage.
  • Manta Style icon.png Manta Style is excellent for sieging buildings, and also provides Alchemist with a much needed disjoint mechanism.
  • Octarine Core icon.png Octarine Core lowers cooldown for Alchemist to use abilities and items more often, increasing the uptime of Chemical Rage as well as damage output and disable from Unstable Concoction. The spell lifesteal allows Alchemist to gain back some health with Acid Spray and Radiance.
  • Blink Dagger icon.png Blink Dagger improves mobility so Alchemist can get in range and use Unstable Concoction on the enemies.

Late game:

  • Boots of Travel 1 icon.png Boots of Travel allows Alchemist to split push lanes, and be present at while farming free lanes. Also, the movement speed boost greatly mitigates his weakness in mobility.
  • Black King Bar icon.png Black King Bar protects Alchemist from most disables so he can continue to deal damage.
  • Shiva's Guard icon.png Shiva's Guard allows Alchemist to be physically survivable and counter apposing right clicking carries much earlier than most heroes can, due to his gold advatnage in most games.
  • Assault Cuirass icon.png Assault Cuirass stacks with Acid Spray and makes targets take much more damage from your right clicks and spells.

Situational items:

  • Mjollnir icon.png Mjollnir increases Alchemist's attack speed greatly, and also gives a useful Static Charge to protect Alchemist or his teammates. Its lightning attack will also trigger often under Chemical Rage.
  • Battle Fury icon.png Battle Fury allows Alchemist to farm anything in no time.
  • Blade Mail icon.png Blade Mail forces enemies to think twice about fighting back against Alchemist.
  • Abyssal Blade icon.png Abyssal Blade goes well with Alchemist's high attack speed, and helps greatly in securing an enemy. It also gives bonus attack damage and greater survivability providing bonus HP and blocking damage from incoming attacks.
  • Heaven's Halberd icon.png Heaven's Halberd gives some strength, evasion, status resistance, and also gives the ability to disarm a threatening enemy.
  • Heart of Tarrasque icon.png Heart of Tarrasque gives Alchemist a massive amount of health. Combined with the health regeneration from Chemical Rage, Alchemist is extremely hard to take down.
  • Moon Shard icon.png Moon Shard grants increased attack speed to Alchemist without using any inventory slots. He can also use Moon Shard on an ally to give them the bonus attack speed instead.
  • Aghanim's Scepter icon.png Aghanim's Scepter allows Alchemist to give the item to an ally, granting them appropriate upgrades and attributes.