Not sure if this is intended, but I found myself spamming up and down to keep my level steady. I wouldn’t get rid of this though; it felt pretty rewarding when I discovered this trick.
I made it to the first checkpoint and then some. Being a few minutes before I considered quitting, I think it was placed rather well.
However, I would suggest a mode where the acceleration is a slightly lower. In addition, what is the logical framerate of the game? It’s a bit jarring for such a tight, fast-paced platformer to have its character move by like 10 pixels when you tap left or right once.
All in all, I liked it. May even consider playing some more later. I already spent more time than I’m willing to admit.