Alchemist

Razzil Darkbrew the Alchemist is a melee strength hero with a bizarre but versatile skillset, serving as a hybrid tank and carry. Unstable Concoction is his main contribution early on, dealing good damage and a lengthy stun. Acid Spray, combined with Greevil's Greed, give Alchemist the unique ability to gain more gold with farming than any other hero. A well-equipped Alchemist can then use Chemical Rage to its fullest effect, as the extra health, incredible regeneration, and base attack time reduction make it one of the best steroid abilities in the game.

Tips

 * An early point in Greevil's Greed will significantly increase Alchemist's income.
 * Smart opponents will 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.
 * Use Acid Spray to dissuade enemies from defending their towers, or pushing into yours.
 * Feel free to use Chemical Rage for its healing effects; it will even regenerate its own manacost over the duration!
 * Avoid skirmishes if your Chemical Rage is on cooldown, especially in the early/mid-game stage when you have few items.
 * If you are in tight spot and nowhere to run with low HP especially without Town Portal Scrool or Boots of Travel, use Unstable Concotion to commit suicide if possible.

Trivia

 * At one point during beta, Alchemist's bio consisted entirely of the following sentence: "Alchemist is named Al and is a chemist. "
 * The name "Razzil Darkbrew" is actually a reference name to a WarCraft III Alchemist character. His name is one of the few who still keeps it in Dota 2, despite being a source from WarCraft.