Level 2 is easy just tilt your plane all the way UP with your landing gear UP and hit the boost every time your altitude starts going down. This requires the max plane with spinner wheels.
1 THING IT ROCKS THIS HOUSE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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 "Gibbets 3"){kind=icon}
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 "Fixation"){kind=icon}