The character art and especially the health heart art were fabulous. I died a lot. Like a lot. I wish the death screen would just auto-restart the player so I didn't have to keep reaching over to my mouse to push "restart". That's pretty minor though.
The platforming was REALLY hard. I don't know if that was on purpose, but a little softballing at the beginning would certainly have helped me out. I kept mistiming my jumps and dying. A lot.
Still, very cool. I liked the little astronaut dude, and the music was GREAT. Definitely kept me engaged even as I died. Nice game!