Cool game actually, the level select UI and the levels look and play pretty good. The page of this game on itch.io though, kinda doesn't, everything is eye-burning saturated, what can reduce the amount of people playing your game.
I also read the "how to play" section, but at fisrt it wasn't obvious enough that I should hover my mouse on the ? button. Also, even after reading the how to play, I still didn't understood how to do the red/cyan swipe walls.
I also think that the game should have a pause button, as I may want to leave a level before finishing it, and after I beat the level, I need to refresh the page because there is no "go back" button, so I get softlocked in the stats screen
Also your game only have one song, if you need some other songs, I have a music channel (N30-Arctrux - YouTube), lust let me know if you found cool song that you want to use