Unlimited ammunition:
In the code entry prompt, push X, Triangle(3), X, Circle, X, Square.
Invincibility:
In the code entry prompt, push Square(2), X, Triangle, X, Circle, X, Circle.
All future weapons:
In the code entry prompt, push X(3), Triangle, Circle(2), Square, X.
All past weapons:
In the code entry prompt, push Circle(2), Triangle, Square, X, Triangle(2), Square.
Quadruple damage:
In the code entry prompt, push Triangle(4), Square, X, Circle, Square.
Mission complete:
In the code entry prompt, push Square(2), Triangle, Circle(2), X, Square, Triangle.
Fight TX Endoskeleton in all battles:
In the code entry prompt, push Triangle, Square, Triangle, X, Triangle(4).
50% more health in combat with TX:
In the code entry prompt, push Triangle(2), Square, X, Circle, Triangle, Square, Circle.
50% more health for TX in combat:
In the code entry prompt, push Square, Triangle, Square, Triangle, Circle, X, Circle, X.