Hey man, just played it and I had a couple of remarks.
Let me start out with saying that esthetic of it looks very interesting and fitting to the less is more theme. The music was also great, but it didn't really match the movement speed. I felt as if I should be able to go a bit faster instead of having to build momentum.
I also noticed that when I was going fast (downhill), jumped and shot, the bullet would get stuck on me instead of firing.
Lastly, a simple improvement might've been to have the ammo-counter visible on the gun, since it looked kind of futuristic anyway, it would've been better for immersion.