That's a nice concept, with really good graphics, but it's too "trial and error" for me ^^'. The controls where strange : sometimes my character didn't jump (and the jumps are too tight to try to jump early and see if it worked or not), but sometimes I also could have a triple jump.
Overwall, it's a nice prototype that lacks a bit of polishing : I don't mind hard games, but unfair games are not for me ^^'. Good job nonetheless !