Complete the indicated task to unlock the achievement.

Achievement	How to unlock
Anarchy	Smash 15 vending machines.
Archivist	Find all the parts of Demikhovsky's diary.
Arena Challenge	Complete the Arena Challenge.
Axe-man Challenge	Complete the Axe-man Challenge.
Centipede	Kill the centipede.
Choo-Choo	Ride the train.
Demikhovsky	Kill Demikhovsky.
Dreadnought	Kill Dreadnought.
Gestalt	Beat the game.
Kleptomaniac	Open the shelf in the desk.
Labyrinth Challenge	Complete the Labyrinth Challenge.
My First Time	Kill your first cadaver.
Neat Freak	Pick up soap in the shower room.
New Boss in the Office	Dispose of the old boss.
Pharmacist	Take "heavenly" pills.
Safe Sex	Find a condom.
Safecracker	Unlock a combination lock.
Sherlock	Find a secret passage.
Skirmish Challenge	Complete the Skirmish Challenge.
Soccer Player	Score a goal with your head.
TV Mania	Watch a TV show.