While playing, press [T] then type any of the following codes for the desired cheat effect:
|mpgod||God Mode (*)|
|mpkfa||All Weapons, Full Health/Energy|
|mptears||All Weapons, Full Health/Energy|
* Note on God Mode: This cheat may turn itself off after a level load so you will need to re-type it to reactive it. It may also say "God Mode Off" when you type it after a load, but it's really turned on. You may have to experiment with it a little bit to understand how it fully works.