Debug mode
Hold Right and press B, C,
B(2) at the main menu. Release Right and press A to display the debug menu.
Level select
Enable the "Debug
mode" code. Highlight the "Run Game" option on the debug menu, hold
Left, and press B, C, B, C. Release Left and press A to display the level
selection menu.
Invincibility
Enable the "Debug
mode" and "Level select" codes. Hold B and press Left, Right(2),
Left at the level selection menu.
View FMV sequences
Hold C and press Right, Left
at the options screen. Release C and enter the "Sound Test" option to
access the "Cinema Sequences" selection.