Level select: Select the "Password" option at the main
menu and press Right, L, Up, Down,
B, Left(2), Right, Left.
Information in this section was contributed by jackson018.
Completion bonus: Use the password obtained after successfully completing
the game to start another game. Hold R + B during
game play in single player mode to get rapid fire from the Gun
Turrets or spread shots from the Tommy Gun.
Information in this section was contributed by cole500.