here's a bug I think: when I tried using my PS4 controller for this, I kept pressing X at the controller screen and nothing would happen for whatever reason. Not sure if this is happening to anyone else, just a nitpick because I suck when playing with a keyboard.
Anyways, this demo is very promising for what's to come in the full game! I've never seen a fan game with this much high quality! Can't wait to see more of this :3