Hit 10 zombies with one tazer shot
Use masking grenade on 3 teammates with zombies near
Dispense 10 supply bags
Open and buy final version of any weapon
Build 100 defences
Heal 30 teammates with health lower than 20% with health packs or stim pistol
Capture 15 turrets
Open 15 rooms or containers with breaching charge
Mark special zombies 50 times
Defuse 10 mines
Kill 20 lying zombies before they get up
Kill 10,000 zombies
Burn 10 zombies with one gasoline puddle
Finish any level without dealing friendly damage
Finish any level without using healing equipment
Finish any level using just pistol
Open and buy all perks in one specialization
Rescue 30 incapacitated teammates
Kill Lurker midair
Kill 10 zombies with gas cylinder explosion
Finish "Jerusalem" episode on any difficulty
Finish all episodes on any difficulty
Finish "Moscow" episode on any difficulty
Finish "New York" episode on any difficulty
Kill Bull during his charge
Finish any level with full team
Finish all episodes on insane difficulty
Walk into Gasbag's cloud 100 times
Finish 25 PvP matches in any mode
Finish PvP match with highest score in any mode
Capture the point and hold it until the end of the match in "Swarm Domination" mode
Open and buy all perks in game
Gather 200 resources during single match in scavenge raid mode
Finish 100 games in PvE
Open and buy final versions of all weapons
