Okay, soooo... I like the game. I really wish there was more to it because I can see this kind of game becoming addicting very quickly with the right amount of content. So, I commend you on that because I just wanna play more and progress more but I became so powerful so quickly I was pretty much done in 5 minutes. The controls, much like other people suggested, need some major work. it's not hard, but it's also no very intuitive. Even if this was on a smartphone, I'd like some sort of d-pad configuration. Anyway, I'd like to see more of this!
Edit: I noticed in other comments you worked on controls so I'll be sure to check that out.
Edit2: Played your updated version, while I can't rate you on that one, it doesn't change too much other than I like the arrow controls much better! Also, the extra enemy types are great, I could really see this becoming a nice progression style game given the time and effort and you have the core really well done so far. obviously it's far from complete but I'll be sure to try and follow your progression on the game.