Extra life:
     Press Up, Down, Square, L2, L1, Down, Up, Down, Down, Up.

All levels:
     Press Down, L2, Up, L1, Square, Down, Down, Down, Down, Up.

All Gallery Items:
     Press Square, Down, L2, Down L1, Square, Up, Square, Down, Down.

Get 10 Magic Pickups:
     Press L1, Down, L1, L2, Square, Down, Up, Down, Up, Up.

Get 4 bonus door keys:
     Press Square, L2, Down, L1, L1, Up, Square, Down, Up, Down.