Bedlam

All weapons and equipment are available:
Run the game with the following command line parameter:
/KARMA

Unknow switches:
Run the game with the following command line parameter:
/US

Invulnerability:
Go to the main menu, edit the player name, and type GOD (all in caps).
Then start a new campaign or continue your previously saved game.
Note: The saved games' player name must also be GOD. You have to change
the Player name to GOD each time the game is run.