Flying Sam
Press [F1] to access the game console. Type 'cht_bFly' and press return and you will enable flying mode. Press [F1] to return to the game.
Full Health
Press [F1] to access the game console. Type 'cht_bRefresh' and press return to give yourself full health. Press [F1] to return to the game.
Ghost mode
Press [F1] to access the game console. Type 'cht_bGhost' and press return to enter ghost mode. Press [F1] to return to the game and you will be able to walk through walls!
Give All Weapons
Press [F1] to access the game console. Type 'cht_bGiveAll' and press return to give yourself all weapons. Press [F1] to return to the game.
Invisibility
Press [F1] to access the game console. Type 'cht_bInvisible' and press return to become invisible. Press [F1] to return to the game. Your enemies will now be unable to see you!
Invulnerability
Press [F1] to access the game console. Type 'cht_bGod' and press return to enable god mode. Press [F1] to return to the game.
Cheat Codes
While playing, press ` to bring up the console and type any of the following "Codes":
Cheat Code - Granted Wish
please giveall - Give All Items
please killall - Kill All Enemies
please god - God Mode
please open - Open All Doors
please fly - Fly Mode
please ghost - No Clipping
please invisible - Invisibility
please tellall - Show All Messages from Netricsa
Master Strategies
When surrounded by thousands of enemies strafe around them to get them all in one lump. then blast the lump. When facing a bull or Krell skeleton use the double barrel shotgun and shoot them just after you've sidestepped.