- OPEN PYRO:
AT SECRET OPTIONS SCREEN, PRESS UP, DOWN, O, DOWN, L2, DOWN, R1, L2.
- OPEN REX:
AT SECRET OPTIONS SCREEN, PRESS L2, R2, R1, UP, SQU, R2.
- OPEN TOX:
AT SECRET OPTIONS SCREEN, PRESS O, UP, SQU, O, SQU, R1, L1.
- OPEN KOSTRA:
AT SECRET OPTIONS SCREEN, PRESS UP, UP, SQU, L2, R2, L2, R2, DOWN.
- OPEN LUNARR:
AT SECRET OPTIONS SCREEN, PRESS DOWN, DOWN, L1, UP, SQU, R2.
- OPEN MEDIUM DIFFICULTY:
AT DIFFICULTY SELECT, PRESS UP, SQU, R1, L2, L2, UP.
- OPEN HARD DIFFICULTY:
AT DIFFICULTY SELECT, PRESS L2, DOWN, L1, R1.
- OPEN EXPERT DIFFICULTY:
AT DIFFICULTY SELECT, PRESS SQU, DOWN, L2, DOWN, O, L2.
