Started of rather difficult, but got quite satisfying/intense when you got the hang of it. The atmospheric sounds and esthetic fits the game-play well. Not bad! there are some things that detracts a bit from the game-feel and makes the experience a bit more difficult to fully enjoy however.
My largest complaint would be left and right movement of the controls, its really, really distracting that its an instant/jump movement instead of a smooth transition. Even more so because moving up and down is smooth, making the difference even more glaring. I crashed more then ones because of the jump in movement made me unfocused. Also just feels very out of place in general.
The hazards where simple in design, but gave a good amount of challenge, liked that you added more as you progressed, and even added some moving ones! However, that's where you also took it to far: The random-moving walls sadly made the game instantly lose all fun-factor, because those made it so it was no longer my skill that decided if I could progress, but if I was lucky not to get the wall to spawn in-front of me as I passed (or, if they did have a pattern, it was way to unclear). I stopped playing at that point, but I hope you added more types of hazards as you progress.
In the end a very nice 3D endless-runner with a few flaws that's rather easy to fix. Great job!