This game has potential but it lacks audio. It needs music !
You should also make the character fall a bit slower, it's way too fast for the camera in my opinion. And remove the fact that it can be stuck on the walls, it's kind of annoying, and easy to do (add a Physics 2D material with 0 friction on the player rigidbody)
You should also make a bit more ennemies, so it's a bit more alive.
And maybe, but that's not really important, add some other audios for the jump, and make them randomize, same for the shoot audio. So it feels better and more alive.
Good submission but needs some improvement !