Kill 50 Zombies With The Rifle
Kill 50 Zombies With The Grenade Launcher
Kill 50 Zombies
See the Game Over Screen for the First Time
Kill 10 Bleeders
Kill 50 Zombies With The Shotgun
Kill 1000 Zombies
Unlock The 'Prison' Level
Survive For 10 Minutes
Kill 30 Bleeders
Kill 200 Zombies
Use a Rocket Launcher
Kill 50 Zombies With The Flamethrower
Unlock The 'Hallway' Level
Unlock The 'Power Room' Level
Unlock The 'Offices' Level
Pick Up an Ammo Crate
Kill 30 Vermins
Unlock The 'Entrance' Level
Kill 10 Vermins
Kill a Bleeder
Unlock 1 file
Unlock the First 8 Files