I love the art, reminds me of risk of rains look.
The game play is simple and easy to understand.
Unfortunately:
-The sounds don't really match the art though. They should all be deeper in pitch imo. Big slow moving orbs would probably not make the same sound a tiny laser would.
-The music got a little grating after a while.
-In the second level something caused the shoot sound to play repeatedly, and I nearly went deaf.
-And losing should really send you to the start of the level, not the start of the game. Thats just cruel.
Overall though. I'd give it a passing grade. :)