It's definitely got a decent feedback loop, and is pretty fun to play! Quite hard, but that's always ok! I will say, it'd probably look better if you moved the lava underneath the player to further create the illusion of movement, and the player should probably fall a little bit faster than they currently do. Still, it's a great take on the theme and on the endless runner genre.
I'd really appreciate it if you checked out my game, Donut Wholes, as well!