During the game
NUM LOCK = Invulnerability
Command line parameters for TEKD1.EXE
(ie TEKD1 NOENEMIES to start the game)
NOENEMIES = Removes everyone but you
NOGUARD = Removes the guards from the game.
NOCHASE = Removes the shooting enemies from the game.
NOSTROLL = Removes the innocent bystanders from the game.
For the full game
ALT+SHIFT+G = Invulnerability
ALT+SHIFT+W = All weapons, lots of ammo, and all keycards.
ALT+SHIFT+J = All matrix symbols that you would normally collect by
killing the bosses.