Kill 6,500 enemies
Kill 20,000 enemies
- Fort Kickass
Have the maximum number of defense items built simultaneously.
Survive a night without using your flashlight while still killing at least 10 enemies.
- Thick Skinned
Take at least 250 points of damage in a single life.
Take at least 500 points of damage in a single life.
- Counter Attack
Kill 50 zombies using the Electro-shield upgrade in a single game.
Hit 3 enemies with a single railgun shot
- Line 'Em Up
Hit 5 enemies with a single railgun shot
Hit 10 enemies with a single railgun shot
- Gather 'Round
Lure 10 zombies onto a single mine
Kill all enemies in the Sewer on normal.
Kill 7 enemies using a single air support powerup
Heal 300 points of damage using lifesteal in a single game
- Eat This!
Kill a tunneler using a well-placed mine
Kill a teammate with the afterblast of a demolition zombie that you shot.
- Dueling Chainsaws
Kill Sackhead using a chainsaw
- Big Hero
Kill at least 30 enemies after your teammates die in a single round.
- You're Fired
Kill 6 enemies with the flamethrower within 8 seconds.
- Bad Timing
Die while reloading
- Hard Carry
Do more damage than all of your teammates combined in a 3+ player game that lasts at least 4 rounds.
Defend the objective 500 times
Kill 4 enemies in 3 seconds with the pistol
- Old Fashioned
Last 6 rounds without building any turrets or fences
- Final Form
Purchase all of the available upgrades in a single game
- The Little Zombie That Could
Get killed by the last basic zombie of the round.
Stop Sackhead with a bear trap
Accumulate 500 explosion kills
- To Catch a Zombie
Catch 500 enemies using the bear trap
- Blood Bath
Be within blood splatter range for 3000 dismembering kills
Kill Deadmass using the med gun
- Basic Training
Complete the single player campaign.
Complete the single player campaign on normal without dying.
Complete the single player campaign on normal without taking damage.