Not a bad game, but I do have some problems.
-Some of the buttons arent working properly for me, or arent working at all.
-I like the enemies but I feel like they need to be varied in how they work. Maybe you could add different movement speeds and HP factors.
Those are the only things I think need an improvement.
All in all, its pretty fun. I hope the best of luck to you.
P.S. You need to put this on iOS and Android as a mobile app!