Play as Stranger Enter the Gallery section and press B, X, Y, B(2), Y, X, B at the first screen. A sound will confirm correct code entry. Alternately, successfully complete the game under any difficulty setting without using any continues. (Thanks to Alex1337@aol.com)

Invincibility for Player Two Select two player mode, and have player one select a jet. Then, press Start + A on controller two when selecting a jet for player two. (Thanks to Alex1337@aol.com)