I don't know much about the tools you've used to create this game, but as soon as I've read "Ray marching" and "Signed distance fields in shaders", I assume you did some hefty software engineering with this small project, and I am impressed by that!
The game itself, looks pretty, the sounds are of good quality (especially the music tracks), and the gameplay was easy to learn, yet hard to master. The only minor issue I've had, is that sometimes the walls were generated in such way, that I could not evade them fast enough (tho, that might be because I haven't played this game long enough). I also think, that the "Perfect step" mode, should be the default moving scheme, with maybe some smooth transitions in between columns.
I'd say that's a pretty solid endless runner, and it's a great entry as a whole!
(On a side note, I could also say that this game made me feel oddly nostalgic for some reason. Perhaps it reminds me of the old flash games that used to have experimental 3D pseudo graphics or something...)