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Dreamcast - Charge 'N Blast cheats

Unlock bonus characters:

Guy:
Finish the entire game once in easy mode

Girl with hyper laser:
Finish the entire game once in normal mode

Very fast weapon reload:
While you are at the title screen press the following button combination:
X, B, Y, A, X, B, Y, A, X, B, Y, A, X, B, Y