1-900	Heavy breathing.
5fingerdiscount	Ammo refill.
avatargod	Your character is invulnerable.
bignoggin	Characters have huge heads.
clodhopper	Big hands and feet.
debugkeys	Debug mode.
explore	Disables victory conditions, allowing you to explore the level.
meganoggin	...even bigger heads!
nobrainer	Disables AI.
stumpy	Really short, deformed characters.
silentbutdeadly	Heh, you'll see!
teamgod	Your entire team is invulnerable.
turnpunchkick	Flat players.