Chopper Attack

Codes

Debug MenuAt the title screen, hold the Z button and enter on the d-pad Right, Left, Up, Down, A, B, Start
Unlock all levelsPress the C Up button seven times at the press start screen

GameShark Codes

Version 1.0

8012943B 0063     Infinite Weapon 1st Position 

8012943F 0063     Infinite Weapon 2nd Position 

80129443 0063     Infinite Weapon 3rd Position 

80129723 0004     Gun 4-Way Shot

81129726 FFFF     Infinite Fuel

801296C8 0320     Infinite Shield

80129723 00xx     Gun Weapon Modifier

Replace xx with:
00     No Weapon
01     Normal Shot
02     2-Way Shot
03     3-Way Shot
04     4-Way Shot

81129426 ???? Score Modifier

Replace the variable ???? with your chosen score, etc. 

80129723 0004     Gun 4-Way Shot

81129726 FFFF     Infinite Fuel

801296C8 0320     Infinite Shield

8012945B 0005     Opens All 5 Item Slots

80129439 00YY     Weapon Modifier 1st Positio

8012943D 00YY     Weapon Modifier 2nd Position

801294F1 00YY     Weapon Modifier 3rd Position

801294F5 00YY     Weapon Modifier 4th Position

801294F9 00YY     Weapon Modifier 5th Position

Replace the YY with:
00     Nothing
01     AGM
02     AAM
03     AGAM
04     Dummy
05     Rocket
06     Cluster
07     H-Cluster
08     H-Plasma