I had fun playing this since I enjoy 2D games that require dodging skills. The only issue I ran into is that the combat is way to easy.
You are able to hold left click to shoot while spamming right click to melee which makes parrying less about timing and more of clicking faster. I would at least consider giving right click a cooldown of some sort to make it a bit more skill based and prevent players from just spamming right click constantly. (Maybe you can buff melee damage to compensate for the slower melee swinging).
I believe that simple change would improve the combat greatly.