Passwords: Enter these codes at the "Special Access" (password) screen:
Level Passwords:
Desert Level: Triangle Square X Triangle X X Square Square
Canyon Level: Circle Triangle Triangle X Circle Circle Square Circle
Airship Level: X Triangle X Square Square Triangle Square Triangle
Volcano Level: Square Triangle X X X Triangle Circle Square
Gauntlet Level: Triangle Circle Triangle Circle Triangle X Square Square
Stormland: Triangle X Triangle Square Circle X Circle Circle
Special Passwords:
Warhawk A-La Mode (infinite weapons and invincibility): Circle Circle Circle (space) X Triangle X X
Infinite Weapons: Triangle Triangle Circle Triangle Square Triangle Triangle X
Thor Mode (9999 flash bombs): Square Circle Square Square Triangle X Triangle Triangle
Kali Mode (super swarmers, ultra lock-ons): X Circle Circle Square X Triangle Circle Triangle
Preview the Epilogues: Square Square (space) Circle Square X Square Triangle
Check Special Upgrades: Square (space) Circle Square Triangle X X Square
Preview the Movies: Triangle X (space) Circle Circle X Triangle Square