It's pretty challenging. I think the game would be a lot better if the camera was zoomed out a little more. It is hard to see what is far in front of you when you are moving fast, so having better visibility would help.
I liked the graphical effect when you die (I know it well at this point). I was a little confused when I started, so maybe in your next rendition include more tutorial. Also, I read that you love making extremely hard levels, and I can confirm that they are extremely hard: so much so that I couldn't get past the first one. Despite this I enjoyed the game. It feels like a game that could be popular on the App Store. Good work!
So I find it funny how you got stuck on my game and I just happened to get stuck against a wall in yours as well. Anyway cool concept, kind of reminds of "Thomas was alone" for some reason. Jump sound perhaps?
Premise is good, though the level design is quite frustrating; I think the zoom out suggestion from trueboolean is a good one. The sound seems to stutter too despite being on chrome, not sure if a bug on my end or it's just how the sounds are.
man that was really tough, would like it if it slowly introduce tougher and tougher challenges, I felt like the first stage was a little too rough, but it was fun!
and I can definitely see people who like really tough games get a kick out of this, great job for 48 hours! :)
Annoying sounds.