The music and aesthetic was very cool. It feels like a 3d version of Crypt of the Necrodancer which is what I assume you were going for here. A tutorial or some documentation on what is what and what each thing does would be hugely helpful. Also using an item causes my multiplier to go to zero? And using space causes the multiplier to increase? That doesn't feel intentional. And coins seem to be able to be picked up some times but not others. I couldn't figure out when I was allowed to pick things up and use items or not.
Overall it's a great start. I think a tutorial would be hugely helpful. Keep going on this.
Great job :)