Hey men, you had some really cool stuff in there, the shooting fist and the screen effect are awesome.
Maybe add: shooting directions up+right, up+left, down+right and down+left instead of only left, right up and down.
Also, maybe add: an exit button (couldn't find it, used task manager to exit the game).
And: I tried the game a couple of times and at a certain point I died, but there were no enemies near me. So I died because of too much shooting or something? Anyway that wasn't clear to me.
So, again, really cool stuff in there, the fist icon is definitely fitting and also, in the jam i've seen 50 games or so, I think you are a contender. So great job!