Doom Cheats & Tips

CLEAN SLATE (5) - Kill all monsters in level on 'Hurt Me Plenty' or higher.
DESTROYER (10) - Get 100 kills on Xbox Live.
EPISODE FOUR (25) - Complete Episode 4 on 'Hurt Me Plenty' or higher.
EPISODE ONE (25) - Complete Episode 1 on 'Hurt Me Plenty' or higher.
EPISODE THREE (25) - Complete Episode 3 on 'Hurt Me Plenty' or higher.
EPISODE TWO (25) - Complete Episode 2 on 'Hurt Me Plenty' or higher.
HOARDER (5) - Find all items in level.
NEOPHYTE (20) - Complete any level.
NIGHTMARE (10) - Win a Nightmare level in single player.
RAMPAGE (35) - Complete all levels on UltraViolent mode.
ROOKIE (10) - Get 50 kills on Xbox Live.
SCOUT (5) - Find a secret area of a map.

Beat any level on Nightmare Difficulty to gain a Gamer Pic of a Demon.