I liked the idea and the meme potential of it, but i found a couple of issues, for example you can just move all the way to a side and never get hit or need to shoot, and also after a while of doing this the walls disappeared and i was infinitely making points, but that's probably due to the time limit of the jam. A couple of tips, first of all give feedback: let the player know that they hit an enemy, let them know that that enemy took damage, make them feel each shot so it's more satisfying. You can achieve this in a number of ways, like adding screenshake, sound fx, sprite/tint changes, animations, but you can start with just the screenshake if you want to go easy: you can implement it with 2 lines of code if you use cinemachine to manage the cameras in unity (there are lots of easy tutorials on cinemachine AND implementing screenshake with it). I hope this helps :D