Nice controls, good game feel and even though the graphics are simple everything's readable. I feel the camera was way too zoomed in, and it was hard to tell where exactly I should die in order to progress. I also wasn't aware you could double jump or wall-jump -- having some tutorial text at the beginning of the level to explain this would've helped a lot. Good work! 

Cool game, really fun!

It was a bit annoying to have to come back every time I died (though it could just be lack of skill on my part :>). Perhaps some sort of a checkpoint system would be a nice addition?

Would recommend having the camera follow the player a bit more quickly, and have the camera show more of the world. Great premise and idea, though!

Cool game, jumping is really satisfying. You should explain mechanics little bit though, I did not know you could wall jump or even double jump until I nearly completed the game. Sometimes you can block your path off by dying at the wrong moment. The sound effects are really clean and satisfying, but the music is too short and repetitive.