Various cheats
     Enter the following codes at the Cheat Menu:

50% Less Health for TX in Combat:
     X, Triangle, Square, Circle, Triangle, X, Square, Triangle

50% More Health for TX in Combat:
     Square, Triangle, Square, Triangle, Circle, X, Circle, X

50% More Health in Combat with T800:
     Triangle, Triangle, Square, X, Circle, Triangle, Square, Circle

All FMV:
     Triangle, Circle, Square, X, X, X, Triangle, Circle

All Future Weapons:
     X, X, X, Triangle, Circle, Circle, Square, X

All Past Weapons:
     Circle, Circle, Triangle, Square, X, Triangle, Triangle, Square

All Still Pictures:
     X, Square, X, Square, Circle, Triangle, Circle, Triangle

Centipede Mini-Game:
     Circle, Circle, Circle, Square, Square, Square, Triangle, Square

Complete Mission:
     Square, Square, Triangle, Circle, Circle, X, Square, Triangle

Fight TX Endoskeleton in Every Battle:
     Triangle, Square, Triangle, X, Triangle, Triangle, Triangle, Triangle

Invincibility:
     Square, Square, X, Triangle, X, Circle, X, Circle

Level Select:
     Square, Square, Square, Circle, Circle, Circle, Triangle, Triangle

Missile Command Mini-Game:
     Circle, Circle, Circle, Square, Square, X, X

Quadrupled Damage:
     Triangle, Triangle, Triangle, Triangle, Square, X, Circle, Square

Unlimited Ammo:
     X, Triangle, Triangle, Triangle, X, Circle, X, Square

View Dev Team:
     Circle, Circle, Circle, Square, Square, Square, Triangle, X