Sprite art is nice and stylish. The story is nice, more of an apocalyptic take on solarpunk which I'm a fan of. I also like what you have in terms of game design, I feel like endless runners and shooters are a solid combination.
A few quirks in the player controller to work out if you continue this project but those have already been pointed out. Just a suggestion, you might also look into implementing some stuff like acceleration, coyote time, etc. when precision is so key.
Congrats on getting it done in the time limit though! Good work.