I love it, haha. The theme is kind of dark, but I enjoy something like that once in a while. Especially the boss fight; that was sick. I also like the different power-ups; I don't know if they are totally random, but it would be nice if there was some sort of method that checks whether or not I got the same power-ups multiple times in a row to give it some more variety.
Besides that, I really enjoyed it. Interested to see where you take it from here. Good job!