Kill 500 zombies
Defeat the end boss
Have 20 enemies killed by propelling airvents in the "Secret Base" level
Defeat the Tank boss
Kill a German soldier by dropping the churchbell on top of him in the "Killing Fields" level
Defeat the German Commander Boss
Kill 200 German soldiers
Defeat the U-boat
Kill 100 enemies with the chainsaw
Finish the Thugtown level, using only the pistol
Kill 200 zombies
Simultaneously kill 5 enemies with the rocket launcher
Kill 100 zombies
Eat 50 cannoli
Kill 5 ball-and-chain zombies in mid air
Destroy 15 vehicles
Survive the Raid using only the baseball bat
Consecutively kill 20 units with headshots
Kill 150 Mafiosi
Kill 75 enemies with headshots