Level select:
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Pause the game and press Up, L1, Right, L1, Down, L1 to unlock all levels.
Invincibility:
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Pause the game and press Up, Down(2), Up, L1, R1.
Max stats:
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Pause the game and press Left(2), R1, Down(2), L1.
Infinite Dashes:
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Pause the game and press R1(2), L1, R1, Left, Up.
Infinite Supers:
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Pause the game and press Left, L1, Right, L1, Up, Down.
Disable Supers:
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Pause the game and press L1(2), R1(2), L1, Left.
Alternate costume:
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Pause the game and press R1, Up, L1, Up, Down, R1.