Here are some cheats and tips for the game Vietcong: Purple Haze.
God mode:
Press L + R + A + Down during game play.
Or, press White + R + A + Down during
game play.
Level select:
Highlight the “Options” menu, then hold L + R +
Black + White.
Or
Highlight the “Credits” option at the main menu,
then press White, Black, X, B.