Warhawk a-la mode (infinite weapons, invincible):
Enter a password of Circle, Circle, Circle, Space, X, Triangle, X, X. The PAL version is Triangle, Square, Triangle, Square, Space, Circle, Circle, Circle.

Infinite weapons (non-invincible):
Enter a password of Triangle, Triangle, Circle, Triangle, Square, Triangle, Triangle, X. The PAL version is X, X, Circle, Square, Triangle, Square, X, X

Thor Mode (9999 flash-bombs):
Enter a password of Square, Circle, Square, Square, Triangle, X, Triangle, Triangle. The PAL version is Circle, Triangle, Triangle, X, Triangle, Circle, X, Circle.

Kali Mode (Super Swarmers, Ultra-Lockons):
Enter a password of X, Circle, Circle, Square, X, Triangle, Circle, Triangle. The PAL version is X, Square, Circle, X, X, Square, Square, Triangle.

View epilogue text:
Enter a password of Square, Square, Space, Circle, Square, X, Square, Triangle. The PAL version is Circle, Triangle, Circle, Space, X, Circle, Square, Triangle.

Check special upgrades text:
Enter a password of Square, Space, Circle, Square, Triangle, X, X, Square. The PAL version is Circle, X, Square, Space, X, X, Circle, X.

View FMV sequences:
Enter a password Triangle, X, Space, Circle, Circle, X, Triangle, Square. The PAL version is Triangle, Circle, Space, Circle, Circle, X, Square, Circle.

Pan viewpoint:
Press L1 + L2 to shift the view to the left or R1 + R2 to shift to the right.

Level passwords:

Desert Level
Triangle, Square, X, Triangle, X, X, Square, Square. The PAL version is Triangle, Circle, Triangle, X, Circle, Square, X, Triangle.

Pyramid Has Risen
Triangle, Square, X, Triangle, Circle, Square, Circle, X. The PAL version is Triangle, Circle, X, Circle, Square, Circle, X, Triangle.

Desert All But Done
Triangle, Circle, X, Triangle, Circle, Circle, X, Square. The PAL version is Triangle, Square, X, Square, Circle, X, Triangle, Circle.

Canyon Level
Circle, Triangle, Triangle, X, Circle, Circle, Square, Circle. The PAL version is Square, Square, Circle, X, Triangle, X, Circle, Triangle.

In Canyon with Amber
Circle, Square, Circle, Square, X, Circle, Circle, Triangle. The PAL version is Square, Triangle, Circle, Triangle, Circle, Circle, Circle, Triangle.

In Canyon with Belle
Circle, Triangle, X, Square, Circle, Circle, Triangle, Triangle. The PAL version is Square, Triangle, Square, Triangle, Square, Circle, Circle, Square.

In Canyon with Crystal
Circle, Square, Triangle, Square, Triangle, Triangle, Triangle, Square. The PAL version is Square, Square, Circle, Square, Circle, Square, Triangle, X.

Approaching Uma
Circle, Circle, Circle, Square, Triangle, Triangle, Square, Triangle. The PAL version is Square, Square, X, Circle, Square, X, Square, Circle.

Airship Level
X, Triangle, X, Square, Square, Triangle, Square, Triangle. The PAL version is X, Triangle, Triangle, X, X, Circle, Circle, Square.

Post Transformation Airship
X, Circle, Triangle, Triangle, Circle, Circle, Circle, X. The PAL version is X, Circle, Square, Triangle, X, Triangle, Triangle, X.

Airship Rear Hanger Open
X, Square, Triangle, Circle, X, Triangle, Square, Square. The PAL version is X, X, Square, X, Triangle, Square, Square, X.

Volcano Level
Square, Triangle, X, X, X, Triangle, Circle, Square. The PAL version is Circle, Square, Square, Circle, Circle, X, Triangle, Circle.

Volcano Boss Is Active
Square, Square, X, Circle, Triangle, Circle, Square, Triangle. The PAL version is Circle, Triangle, Circle, Square, Square, X, Circle, Triangle.

Gauntlet Level
Triangle, Circle, Triangle, Circle, Triangle, X, Square, Square. The PAL version is Square, X, X, Circle, Square, Circle, Triangle, X.

East Gauntlet Boss
Triangle, Circle, X, Triangle, Circle, X, Triangle, Square. The PAL version is Square, X, Triangle, Square, X, Circle, X, Circle.

West Gauntlet Boss
Triangle, Circle, Circle, Square, Triangle, Circle, Circle, X. The PAL version is Square, X, Circle, Circle, Triangle, Square, Triangle, X.

In With The Gatekeeper
Triangle, Circle, Circle, Triangle, Triangle, X, Square, Triangle. The PAL version is Square, X, X, Square, Circle, Square, Square, Circle.

Stormland
Triangle, X, Triangle, Square, Circle, X, Circle, Circle. The PAL version is Square, Circle, Triangle, Square, Circle, X, X, Triangle.

Above 1st Force Field
Triangle, X, X, Square, Circle, Square, Circle, X. The PAL version is Square, Circle, Triangle, Circle, Triangle, Square, Circle, X.

Above 2nd Force Field
Triangle, X, Triangle, Triangle, Triangle, X, Circle, Triangle. The PAL version is Square, Circle, Circle, Triangle, Square, Triangle, Square, X.

Above 3rd Force Field
Triangle, X, Square, Circle, Triangle, X, Triangle, Square. The PAL version is Square, Circle, Circle, X, Triangle, Triangle, Triangle, Square.

Kreel's Door Is Open
Triangle, X, Square, Triangle, Circle, Square, X, X. The PAL version is Square, Circle, X, Triangle, Square, X, Square, Circle.

Face to Face With Kreel
Triangle, X, Triangle, Square, Square, Square, X, Triangle. The PAL version is Square, Circle, Circle, Square, Triangle, Triangle, Circle, Triangle.