Press Enter and type one of the following codes during the game:
Invincibility: “ mpcanthurtme”
All weapons and ammo: “ mpschuckit”
Infinite ammunition: “ mpbunker”
Full armor: “ mpsmithy”
Full ammunition: “ mpkohler”
Full ammunition: “ mpstockpile”
Set health to indicated number: “ mpdoctordoctor [number]”
No clipping: “ mpsixthsense”
Third person view: “ mpicu”
Speed display: “ mptachometer”
Size display: “ mpsizeme”
Rotation display: “ mpgrs”
Show position info on/off: “ mpgps”