Play Defense Game Mode
Play Classic Survival Game Mode
Play Search and Destroy Game Mode
Kill 100 zombies
Kill 1000 zombies
Kill 500 zombies
Upgrade your weapon
Buy a new weapon from the armory
Upgrade all weapons in the Armory
Buy all weapons in the Armory
Complete Search and Destroy Game Mode
Complete Defense Game Mode
Survive 20 waves in Classic Survival Game Mode
Survive 10 waves in Classic Survival Game Mode
Survive 30 waves in Classic Survival Game Mode
Kill 5000 zombies
Kill 2000 zombies
Kill 10000 zombies
Kill 2 or more Zombies in single shot
Kill 500 zombies with Revolvers
Kill 500 zombies with Pistols
Kill 500 zombies with Submachineguns
Kill 500 zombies with Shotguns
Spent 10,000 cash points
Kill 500 zombies with Rifles
Survive 40 waves in Classic Survival Game Mode
Clear the Hard Difficulty.
Kill 1000 Zombies with Sentry Gun
Kill 500 Zombies with Sentry Gun
Kill 20000 zombies
Kill 500 zombies with DMR
Become a Level 5
Become to Level 1
Become a Level 15
Become a Level 10.
Become a Level 25
Become a Level 20
Buy a new skill.
Buy 30 skills
Obtain skill level 5
Kill 500 zombies with Sniper Rifles
Reset all skills
Kill 500 zombies with Explosive Weapons
Kill 4 or more zombies with single explosion
Become to Level 30
Kill 2 or more zombies with single penetrating shot
Buy a Grenade
Buy a Mobile Sentry Gun
Kill 2 or more zombies when bomber explodes
Kill 500 zombies with Mobile Sentry Gun
Kill 100 Brutes.
Kill 100 Bombers.
Kill 100 Hunters.
Kill 100 SWAT Zombies.
Clear the Insane Difficulty.
Kill 100 Commando Zombies.
Become to Level 35
Buy all abilities
Kill 50 zombies before getting the elevator in labs survival mode.
Clear the Nightmare Difficulty.
Kill 500 zombies with LMG
Clear Survival Game Mode
Achieve Tier 1 of any class.
Achieve Tier 2 of any class.
Achieve Tier 4 of any class.
Achieve Tier 3 of any class.
Achieve Tier 5 of any class.
Play the multiplayer.
Heal your allies more than 10,000 amount of health.
Achieve a self-healing amount of 10,000.
Give ammo supply 250 to ally units.
Achieve 500 headshots.
Clear the Insane Nightmare Difficulty.