Extra life:
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Press Up, Down, Square, L2, L1, Down, Up, Down, Down, Up.
All levels:
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Press Down, L2, Up, L1, Square, Down, Down, Down, Down, Up.
All Gallery Items:
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Press Square, Down, L2, Down L1, Square, Up, Square, Down, Down.
Get 10 Magic Pickups:
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Press L1, Down, L1, L2, Square, Down, Up, Down, Up, Up.
Get 4 bonus door keys:
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Press Square, L2, Down, L1, L1, Up, Square, Down, Up, Down.