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