Kill 25 enemies.
Kill 100 enemies.
Kill 250 enemies.
Kill 1000 enemies.
100% complete 5 levels.
100% complete 10 levels.
100% complete 15 levels.
100% complete 20 levels.
Complete Sector 1.
Complete Sector 2.
Complete Sector 3.
Complete Sector 4.
Be Killed by a Standard Door.
Possess a Robot.
Drink 100 Cans of Soda-Pop.
Needlessly Kill a Scientist.
Die 250 Times.
Be defeated by the Ghost Huntress 10 times.
Possess 50 Scientists.
Drown.
Interact with a Haunted object for the first time.
Die from gas.
Successfully navigate a Jump Pad sequence without dying.
Complete one challenge level.
Complete five challenge levels.
Complete ten challenge levels.
Release the Zombie Horde.
Kill a robot with another robot.
Spare the CEO, regain your Humanity.
Kill the CEO, reject your Humanity.