This is actually a really fun game, I think I played it for a good 10 minutes. The collision engine feels solid, it's quite intuitive too. No tutorial needed.
That said, it suffers from a huge difficulty spike at level 2. I spent the whole time going round and round, unable to manage the hand eye coordination to get to that double jump rush combo platform with the other 3 keys.
I was about to give up and did 1 last run, and spammed the Z and C keys and suddenly made it. I was already on my way to close the browser and had to scramble back to the keyboard to continue playing. But unfortunately it was too late and I fell down again.
The loops following, I still couldn't find my way up, but by spamming the keys, I'd make it 20% of the time. But I always panicked when I finally made it though and never was able to make it to that last key.
A side note, I don't know what it is, but the main reason I had to stop was because I felt nauseous. There's something jittery about the camera and the way the speed corresponds with the background, it just makes me feel a little unwell. I was able to ignore it at first but in the end I got overwhelmed.
I am stuck here.
Overall a cool entry, good use of the theme