To enter cheat mode
Enter iwantcheat during a mission to enable cheat mode. A clicking sound will confirm correct code entry. Then, enter one of the following codes during a mission to activate the corresponding cheat function. The same clicking sound will confirm correct code entry.

Code Effect
funnyhead Big head mode
skipmission Mission skip
abandon Mission failure
ironman Extra health
fullhands All items in inventory in single player mode
immortality Toggle player hits; must active on all participants if done in multi-player mode
suicide Suicide