Unlock All Missions
At the options screen, Set vibration to one. As for Sound effects and Music, put them to 0. Then press and hold L1, L2, R1, R2, Circle, and Square.
Contributed By: Ryan Rider.
Unlock Maniac Difficulty and a Bonus Helicopter
Unlockable How to Unlock Bonus Helicopter (Faster speed, dive, and climb abilities) Complete the game on Hard difficulty Helicopter Selection Option Complete the game on Maniac difficulty Maniac Difficulty Complete the game on Hard difficulty Second Bonus Helicopter (Faster speed, dive, and climb abilities and more armor) Complete the game on Maniac difficulty
Contributed By: Asch The Hated.
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