Yes, it is fun, but it could be more fun.
The audio is REALLY loud, and in the wrong places. The art has no style, and often conflicts other objects. A volume slider and a proper set of tiles is an easy and simple way to fix both of them. Also, one of the guns has such high recoil and speed that it basically acts as an overpowered killer and get away.
It is fun, but I'm not sure it is in a good way. It's like a mobile game, and that has positives and negatives. Good job at this game jam, and I really hope that you can do something great next year!