Successfully complete all twenty missions on the normal difficulty setting to unlock a "Special" selection on the options menu. The new options allow infinite missiles and the HUD display to be removed.
Successfully complete all twenty missions to unlock the following airplanes: Sea Harrier, AV-8B Harrier II, F/A-18C Hornet, F-15E Strike Eagle, Su-27B Flanker, Su-34 Platypus, S-37 Berkut, MiG-1.44 MFI.
Use guns instead of missiles to shoot down an airborne target to double the reward money.
Pass through objects
Pause the game before your plane hits an object. Then, press B + Y to change camera angles. Resume the game to have your plane pass through the object.
Full replay screen
During a replay, hold X + Y to remove the text from the screen.