During game play press 'Start' to pause the game and then hold L and R and input the following codes to unlock the corresponding effect. When you release L and R 'Code Enabled' will appear.
Unlock ALL Levels:
Y, X, Y, X, X, B
Unlock ALL Moves:
Y, X, Y, B, B, X
Extra Damage:
Y, X, Y, X, Y, B
Powered-Up Projectile Attacks:
Y, X, Y, X, B, X
Gain More Health from Power-Ups:
Y, X, Y, X, B, Y
Unlock Bonus Comic #1:
Y, X, B, B, X, Y
Unlock Bonus Comic #2:
Y, Y, B, X, B, X
Unlock ALL Mini-Games:
Y, X, Y, Y, Y, B
Unlock the following by completing the corresponding tasks.
Unlock Minigame - Range Driver 1:
Complete 10 Objectives
Unlock Minigame - Bumper Carts 1:
Complete 15 Objectives
Unlock Attack - Finishing Moves:
Complete 20 Objectives
Unlock Minigame - Race Track 1:
Complete 25 Objectives
Unlock Minigame - Bumper Carts 2:
Complete 45 Objectives
Unlock Minigame - Range Driver 2:
Complete 40 Objectives
Unlock Attack - Ground Pound:
Complete 50 Objectives
Unlock Minigame - Race Track 2:
Complete 60 Objectives