Well, I gave it a brief shot. Is the downloadable version different? It's so zoomed-in that I couldn't really see anything around the character. It felt a bit like I was stuck in a loop, too, but maybe it's just that the level design doesn't have a lot of variation.
If you move left, you drop down a few pixels for some reason. Collision-box mismatch, maybe?
It's also very possible to get caught on the sides of platforms and just hang in mid-air.
I found it strange that I took damage from some spikes but died instantly from others.
The jump in the starting area is extremely weak.
You can walk left at the start (even with the dialogue open) and fall out of the world.
Is there more to the game? I played the first area and then went through the second until I had to make a blind drop and ended up in an area a lot like where I'd started.