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.