I hope you keep working on it even after the jam, this game was really fun. My only complaints are the menus is hard to read and when you switch to first person it feels like youre not supposed to, if that makes any sense. The main problem is the camera, the natural action as player is you want to look around with the thumbstick/mouse but the camera acts like tank controls. I hope that gets ironed out, Ive never seen a topdown shooter be able to switch back and forth between topdown and first person before, that was a cool idea.
The topdown view mode is great though, the only thing I'd add is maybe power-ups/weapons and maybe some more enemy variants the further time goes on. Since it's endless you could have new variants stop showing up after X amount of time or if you want to get really crazy with it theres probably a way to generate variants with procedural generation.