Kill 250 zombies using edged melee weapons.

Kill an Infected with a grenade blast.

Complete act I.

Kill 10 zombies in a row with headshots.

Kill 25 zombies with your bare fists.

Complete 25 quests while playing with at least one co-op partner.

Drive a total distance of 10 kilometers.

Reach level 10.

Kill 50 zombies using a vehicle.

Kill a zombie with 10 different melee weapons.

Breach a locked door with the first blow.

Earned a 5-star rating for all Cie'th Stone missions.