Awesome game! Needs more of a "plot" though.
I'm not saying this game needs a storyline, or explanation behind the flying panda, because the randomness of it is awesome. But some sort of a progression between levels, other than just more spaced out stars, would be better.
Also, on some of the higher levels, you cannot actually see the star above you - so you end up flying blind, hoping you've guessed the right direction; otherwise you have to waste a boost.
I've managed to unlock 29/30 achievements - I have no idea what "Panda Hater" is meant to be awarded for! I feel like I've already done everything possible in the game!
Anyway, great game, I hope you have the time to make a sequel to it some day.