ShellShock: Nam '67 Cheats for PC
If you enter 'Cowboy' (case sensitive without the quotes) as a name your character will wear a cowboy hat in some of the intermission sequences.
Activate the following effects by entering the corresponding case sensitive code (without the quotes) at the 'Main. menu.
Unlock God Mode:
Unlock Missions and Gallery:
Unlock Psychedelic Mode: