Level select:
Press C-Up(7) when "Press Start" become visible on the opening screen.
Debug mode:
Hold Z and press Right, Left,
Up, Down, A, B, Start when
"Press Start" becomes visible on the opening screen.
Shoot down the President:
Press Z + C-Up + C-Down while playing the game, then fire a homing cluster at an enemy plane.
Power chopper:
Hold L + R + Z and press Start
at the main menu before selecting a chopper.
Chopper preview:
Highlight a chopper on the chopper selection screen.
Press L to display the statistics screen. Press the Analog-stick
to control the rotating model of the chopper.
Alien weapon:
Finish level 7 under expert difficulty.
Then, fight on the moon to purchase the alien homing plasma weapon.
King 10:
Locate King 10 in level 7, defeat him, then finish the mission.
Stingray:
Locate Stingray in level 7, defeat him, then finish the mission.
