Prett good, only one suggestion
It was a fun game with a simple concept. It was fairly difficult but definitely addictive. My suggestion is to implement an option to use W,A,D to control character movement instead of the arrow keys. Right handed people want to use the mouse with their right hand which makes using the arrow keys with their left hand awkward. So, especially with a laptop, we are forced to mouse with the left hand. That sucks. A W,A,D control option would fix that problem nicely. That is all I have. Nice submission.