In terms of theme, this one is on point. Loved the idea of having to manage items to keep your momentum going.
That said I felt like a lot of the game forced me to memorize the level because you go too fast to react to rocks and sudden pits. The camera could've been moved to the right so I can see more or zoomed out entirely, I couldn't get past level 4 because I either went too slow that I couldn't make a jump or too fast that I fly upwards and fall straight into a hole or rock. Signs telling you what's ahead also could've been a huge help.
Aside from that, fun game!