The art looks nice and I like the idea of the UI. I punched the air a few times. I also punched a guy all the way down there. He was calling for it.
After reading your GDD, it does feel to me like you might've overscoped a bit. It happens to the best of us, and it's part of the learning experience. The knowledge these jams bring is invaluable though, and it'll be interesting to see what you do on next jams with the knowledge that you've gained here. Keep making stuff!