-Passwords:
Level 04 - Medal, Medal, Your Plane, Enemy Plane
Level 08 - Your Plane, Enemy Plane, Enemy Plane, Medal
Level 12 - Bullet, Enemy Plane, Your Plane, Your Plane
Level 16 - Enemy Plane, Enemy Plane, Bullet, Enemy Plane
Level 20 - Your Plane, Medal, Bullet, Your Plane
Level 24...