GOD = God mode
IMPULSE 9 = Gives all weapons
IMPULSE 255 = Gives you Quad Damage
NOCLIP = No clipping mode
MAP ExMx = Level warp. Replace the x with a value for the desired episode and map number respectively
FLY = fly around use the d and c keys to move up or down
NOTARGET = Monsters won't target you unless you attack
REGISTERED 1 = Tricks the shareware version into thinking it is the full version, allowing all weapons on the start map in
multi-player mode. Does not let you get into registered levels.
GIVE # = Gives you weapon #
GIVE S # = Gives you # shells
GIVE N # = Gives you # nails
GIVE R # = Gives you # rockets
GIVE C # = Gives you # cells
GIVE H # = Gives you health #