Game could use a lot of work, particularly in the level design. Both levels feel very samey. As in, if you recorded a playthough of your game and cut it into 10-seconds-long scenes, you'd find the player doing almost exactly the same things in each scene. You run around a bit, kill enemies, and jump on some platforms. The difficulty curve is flat as a pancake; it's boring.
And there are way too many enemies in each level. You can't even go five seconds without bumping into three or more of them. Don't just put enemies in your levels willy-nilly.
Two other minor issues: Health items drop too rarely. After seeing one drop, I completely forgot that they were in the game until I saw a second one three minutes later. And lastly, the up-air attack makes your jump peak too early.