Enable a lockout code to allow blood in the game. Use the "Change Code" selection on the options screen. Hold A + C on controller two and enter one of the following codes on controller one to activate the corresponding cheat function.

Same character match
Press 6, 2, 1, 5, 4, 4. The exclamation "Ha!" will confirm correct code entry.

"Sensible Fighter" player one
Press 7, 4, 3, 8, 7, 1. A swishing sound will confirm correct code entry.

"Sensible Fighter" player two
Press 8, 9, 9, 2, 4, 4. A swishing sound will confirm correct code entry.

Play as Gyaku/Demon Gyaku
Press 3, 7, 4, 9, 6, 1. A sound will confirm correct code entry.

Reset parental lockout code
Press 5, 2, 4, 6, 4, 8. A sound will confirm correct code entry.

Already have key to temple
Press 6, 3, 7, 4, 0, 4. A sound will confirm correct code entry.