- NIGHT VISION MODE:
AT MAIN MENU, HOLD R1, PRESS START. AT MODE SELECT SCREEN, PRESS START 5 TIMES. YOU'LL HEAR A GUNSHOT.
- NIGHT NO AIMING RING OR ENEMY MARKERS:
AT MAIN MENU, HOLD R1, PRESS START. AT MODE SELECT SCREEN, PRESS START 6 TIMES. YOU'LL HEAR A GUNSHOT.
- HIDDEN ENEMIES:
AT MODE SELECT SCREEN, PRESS RIGHT, DOWN, RIGHT, SQU, UP, SQU, SQU, TRI, DOWN, RIGHT, DOWN, RIGHT, SQU, TRI.
- LOVE MODE:
AT MODE SELECT SCREEN, PRESS LEFT, RIGHT, RIGHT, SQU, TRI.
- MIRROR MODE:
AT MODE SELECT SCREEN, PRESS LEFT, LEFT, RIGHT, SQU, DOWN, DOWN, UP, TRI, UP, RIGHT, DOWN, UP, LEFT, DOWN, SQU.
- ONLY SCOPE:
AT MODE SELECT SCREEN, PRESS UP 4 TIMES, DOWN 4 TIMES.
- NO SCOPE:
AT MODE SELECT SCREEN, PRESS RIGHT, DOWN, RIGHT, SQU, RIGHT, DOWN, RIGHT, SQU.
- NO AIMING RING:
AT MODE SELECT SCREEN, PRESS RIGHT, RIGHT, RIGHT, SQU.
- NO EMEMY MARKERS:
AT MODE SELECT SCREEN, PRESS RIGHT 4 TIMES, LEFT, DOWN, UP, RIGHT.
- TURBO MODE:
AT MODE SELECT SCREEN, PRESS DOWN, TRI, UP, SQU, TRI, DOWN, RIGHT, DOWN, RIGHT, SQU, TRI.
- TRADE TIME FOR HEALTH:
PAUSE GAME, PRESS UP, UP, DOWN, DOWN, LEFT, RIGHT, LEFT, RIGHT, X, O. YOU'LL HEAR A DING.
- TRADE HEALTH FOR TIME:
PAUSE GAME, PRESS O, X, RIGHT, LEFT, RIGHT, LEFT, DOWN, DOWN, UP, UP. YOU'LL HEAR A DING.
