Good but not great
This game is fun, or at least it could be. One of my ma issues is that I find it easy to just hold the "w" key and easily pass a level. There is no skill required to plat this game. Also when you pass a level you have to return to the level screen to pick a new one. A "next" button or maybe a tap of the space bar would make it easier to go from level to level. Lastly like a few mentioned before there should be a level editor. It would be fun. Great graphics, good gameplay, and nice music.