That was really fun! Very solid mechanics, although the way gliding works by reducing your gravity while jumping led to some weird feeling situation, like falling _very_ quickly after gliding for too long, or flying upward by taking advantage of the big initial upward velocity from jumping.
The graphics and music were charming and fit the overall aesthetic really well. No complaints about SFX either, they were subtle and on point.
I don't know if it was intentional, but there's a huge skip on level 3 where you're shown the goal right away and on the second wind tunnel you can circle back and boost all the way up to the top off the mountains only to glide right down to the finish. :D
Overall awesome work! I had a lot of fun exploring and playing through.