Get all the grades and earn the Master Grade.

Big Head Mode

Pause the game, hold R, and press Y (4x).  Then, release R, hold L, and press Y, Y.  Hold R + L and press Y, X, Y.

Battle Arena

Get all the grades and earn the Master Grade.

Big Head Mode

Pause the game, hold R, and press Y (4x).  Then, release R, hold L, and press Y, Y.  Hold R + L and press Y, B, Y.

Level Skip

Pause the game, hold R and press B (3x), X.  Then, release R and hold L and press Y, Y.  Release L, and press R, B, B.

Upgrade Sword

Pause the game, hold L + R, and press X, B, X, Y, Y, B, X, B.