Collect $20,000 in a single chapter.
Kill your first Damned Zombie.
Complete Story Mode in Single Player.
Complete all Objectives listed for any chapter.
Use each character's Pwnage ability 10 times.
Pick-up all five mash-up weapons with each character.
Survive a fortnight in Blackout Mode.
Survive 30 days in Survival: Classic.
Bring all possible survivors to Def Money's yacht in Story Mode.
Get all 100 upgrades for your characters.
Complete a Story Mode: New Game with 3 other players.
Complete All Chapter Objectives.
Complete Prequel: Day 56.
Survive Pure Pwnage for 10 minutes.
Pwn 10,000 zombies with Jeremy and Doug.
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