Enter these in the Pause menu:
Opens Bonus Gallery (can be used multiple times):
Triangle, Up, Circle, Right, Down, Down, Square, Left.
Restore Life:
L1, R2, L2, R1, Up, Up, Left, Square, Right, Circle, Start.
Shrink Jamgut:
R2, R2, Circle, R2, L2, L2, Left, L2, Triangle.
Different Ending:
Save all of the Natives.
