Mustache



Mustaches are items that appear on Zombies, Conehead Zombies, Buckethead Zombies, and Screen Door Zombies

when you type "mustache" while the game is being played. You can activate this code at any time in the game.

Achievements
If you do this, in Steam you will unlock the achievement Ask Me About Mustache Mode. In GOTY, this was reverted to Mustache Mode. These achievements are regarded as the easiest achievement in the game.