When in the game, press ~ to display the console window and then enter one of the following codes. Press Enter to activate the corresponding cheat function:
God mode: please god
All weapons and ammo: please giveall
Kill all monsters: please killall
Open all doors: please open
Invisibility: please invisible
Restore energy: please refresh
Flight mode: please fly
No clipping mode: please ghost
View all messages: please tellall