Level Select
————
Set the Vibration level in options to 1 and both
SFX and Music to 0.
Then hold L1 + L2 + R1 + R2 + Circle + Square.
A message will confirm you have done it right.
Ending bonuses
————–
Successfully complete the game under the hard difficulty
setting. The maniac difficulty setting and a bonus chopper
and will now be unlocked.
The bonus chopper flies, turns, climbs, descends,
and shoots faster.
