Use the character creator to make a custom character

Fully upgrade all weapons in Zombat

Recruit your 5000th zombie

Fill the Stickerbook

Complete 30 objectives

Complete all 150 objectives

Make a conga line at least 25 zombies long and keep dancing for 90 seconds

Kill 300 humans with grab

Beat the tank 3 times in a single play

Play the game, in a game, in a game

Pass 1000 checkpoints

Beat the first three rounds of Infection without using any powerups.

Collect 5000 mutagens

Kill 13 humans with a single grab

Use the ghetto blaster 200 times

AWESOMESAUCE! You checked out everything there is to check out

Survive 180 seconds on Pacifist Island

Beat level 15 in a game of Gordon

Eat 11111 Brains

In a single playthrough, play each of the spawned minigames at least once.

Get the exact same sticker 3 times

Destroy 15 snowmen in a single run

Got to round 8 of Holiday Hijinx. You didn't cheat did you?

Kill 99 elves

Max out each minigame at least once

OMG! YOU KILLED SANTA. HOW COULD YOU?! YOU MONSTER!