Ace Killer - Defeat all the other Aces to unlock Ace Killer.

Ace Of Aces - Get the highest score in all Campaign missions to unlock Ace Of Aces.

All campaign missions and planes - At the main menu, hold L1 + R1 and quickly press Square, L2, R2, Triangle(2), R2, L2, Square to unlock all campaign missions and planes.

Increased damage by weapons - Pause the game, then hold L1 and quickly press L2(2), R2. Then, hold R1 and quickly press R2(2), L2. Repeat the code to disable its effect.

Invincibility - Pause the game, then hold L1 and quickly press Square, Triangle(2), Square. Then, hold R1 and quickly press Triangle, Square(2), Triangle. Repeat the code to disable its effect.