Invincibility:
Press C, A, B, C, Up, Down at the title screen.

Fifty lives:
Press B, Up, B(2), A at the title screen.

All levels complete:
Press Up, A(2), Down at the title screen.

Super jumps:
Press B, A, B, C at the title screen.

Ninety-nine portable holes:
Press Right, Up, B(2) at the title screen.

Ninety-nine Nerf shots:
Press B, A, Left(2) at the title screen.

Ninety-nine diving suits:
Press B, Left, Up, B at the title screen.

Ninety-nine smart bombs:
Press C(3), Up, Down, C at the title screen.