Cheat mode:
Press ~ during game play to display the console window. Then, type one of the following codes and press [Enter] to activate the corresponding cheat function. Note: Some versions of the game may require the "Trainer: Cheat Enabler" to be downloaded and installed before codes can be activated.

Effect	Code
Toggle God mode	god
Toggle flight mode	fly
Toggle no clipping	noclip
Ignored by enemies	notarget
All weapons	impulse 9
All weapons and full ammunition	impulse 255
Suicide	kill

Cheat mode (alternate):
Start the game with the eternalwar.exe stuffcmds command line to enable cheat mode. Press ~ during game play to display the console window. Then, type one of the previously listed codes and press [Enter] to activate the corresponding cheat function.