Survive 5 minutes with one life in Survival mode on Extreme difficulty in a Zombie Sushi level.
Beat ten of your friends on any leaderboard in a Zombie Sushi level.
Kill 1000 Zombies with the lightning strike.
100 Shotgun combos in a Zombie Sushi level.
Survive 5 minutes with one life in Survival mode on Extreme difficulty in an In Space level.
Beat ten of your friends on any leaderboard in an In Space level.
Transport 1000 Zombies off the Mothership Bridge.
Get 100 Gatling Gun combos in the Engine Room.
All Developer medals.
All Gold medals.
All Silver medals.
All Bronze medals.
All levels unlocked.
All Arcade levels unlocked.
Complete Zombie Academy.
1000 Zombies blown up.
100 Chainsaw Combos.
100 Brains sucked.
1000 Zombies sent dancing.
Last 30 seconds with 50+ zombies on fire.
Kill the away team Zombie.
Fill the screen with the maximum amount of blood on any level.
100,000 Zombies killed.