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