Finish all episodes on any difficulty

Kill 10 zombies with gas cylinder explosion

Kill 10,000 zombies

Kill Bull during charge

Finish episode "Jerusalem" on any difficulty

Finish any level with full team

Reach Level 55

Kill 500 enemy soldiers while not in a Vehicle

Travel 15km using ground vehicles

Reach Player Level 15

Killed 50 enemies while in Vehicles

Upgrade either your Health, Stamina, or Focus for the first time