Complete the indicated task to unlock the achievement.

Achievement	How to unlock
Chop Shop	Destroy 15 vehicles.
Drop The Ball	Unknown.
For Whom The Bell Tolls	Kill a German soldier by dropping the churchbell on top of him in the 'Killing Fields' level.
Guillotine Master	Kill 75 enemies with headshots.
Homerun	Survive the Raid using only the baseball bat.
I Really Don't Like Zombies	Kill 500 zombies.
Killing Spree	Kill 200 zombies.
Mindblowing	Consecutively kill 20 units with headshots.
Nazi Hunter	Kill 200 German soldiers.
No Loitering!	Simultaneously kill 5 enemies with the rocket launcher.
Quick Draw	Finish the Thugtown level, using only the pistol.
Sweet Tooth	Eat 50 cannoli.
Swinging Balls	Kill 5 ball-and-chain zombies in mid air.
Tanks A Lot	Unknown.
The Last Don	Unknown.
The Widowmaker	Unknown.
Timber	Kill 100 enemies with the chainsaw.
Undead Hunter	Kill 100 zombies.
When Blood Hits The Fan	Have 20 enemies killed by propelling airvents in the 'Secret Base' level.
Wiseguy Whacker	Kill 150 Mafiosi.