Robot select:
Successfully complete normal
mode. Then, press Right, Left, Right, Left, A on controller two at the title
screen. Any robot may now be selected in scenario mode.
Remove radar display:
Press Up, Down, A(2), B on
controller two.
Remove enemy tracking
radar:
Press C(3), Up, B on
controller two.
Display destroyed enemies:
Press C, B, A, Z, Y on
controller two.
Pink color:
Press Left(2), B, Left, Right
on controller two.
Black color:
Press A, C, B, C(2) on
controller two.
Expert mode:
Successfully complete the game
under the normal and hard difficulty levels.
Have a saved game file from
the original Gun Griffon.