Sky Odyssey
Auto Gyro
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Successfully complete all levels in sky
canvas mode with more than 90 points to
unlock the Auto Gyro.
Corsair
-------
Accumulate enough acrobatic points in
adventure mode to have ten of your mission
grades marked with circles to unlock the
Corsair.
Gold UFO
--------
Successfully complete all levels in
target mode with a gold rank to unlock
the Gold UFO.
Me-262
------
Successfully complete adventure mode to
unlock the Me-262.
Silver UFO
----------
Successfully complete all levels in the
adventure mode with an A rank to unlock the
Silver UFO.
Stealth Fighter
---------------
Successfully complete all levels in adventure
mode with a total time of 10 minutes or less
to unlock the Stealth Fighter.