Chopper Attack Codes -

 

Level select:
Press (x7) when "Press Start" appears on the opening screen.

Debug mode:
Hold and press , , , , , , when "Press Start" appears on the opening screen.

Shoot down the President:
Press + + during game play, then fire a homing cluster at an enemy plane.

Power chopper:
Hold + + and press at the main menu before selecting a chopper.

Chopper preview:
Highlight a chopper on the chopper selection screen. Press to display the statistics screen. Press the to control the rotating model of the chopper.

Alien weapon:
Complete level 7 under the expert difficulty level. Then, fight on the moon to purchase the alien homing plasma weapon.

King 10:
Locate King 10 in level 7, defeat him, then complete the mission.

Stingray:
Locate Stingray in level 7, defeat him, then complete the mission.