Not bad! Love the hand-drawn look of the art, makes it all look very charming. A easy to understand mechanic with a good tie-in to the limitation, 3 hole levels! With every one having its own theme, very nice. Might feel like the Cave level is a bit far from the theme Space, but hey, the main-character is a astronaut so cant complain. Think also the levels might need some tweaking, as it felt that maybe the level difficulty spiked in odd places, with some challenges early being (for me) hard to complete.
Overall a great effort!