IDDQD = Invincibility
IDKFA = All weapons, All keys, 200% armor
IDFA = Same as above but without the keys
IDCLEV + (episode #) + (level #) = Warp to any episode & level
IDCLIP = Walk through walls
IDDT = While in "map mode" reveals entire map
IDCLIP = Walk through walls
IDBEHOLD + I = Invisibility
" " + S = Berserk pack
" " + V = Invulnerability
" " + R = Radiation suit
" " + L = Light amp goggles
" " + A = Computer area map
IDCHOPPERS = CHAINSAW
IDMYPOS = COORDINATES
IDSPISPOPD = Clipping toggle
IDMUS## = PLAY MUSIC OF A LEVEL
During a deathmatch net game, hold Alt and type IDDTIDDTIDDTIDDT to see your opponent on the map screen.