I've checked only around 30 submissions but so far this one is imho the best (from all the 2d games at least). Controls are the only thing that I find slightly annoying but I belive that once you master it they are ok. My game also have controls that need few moments to get a proper feeling of them.
Other than that it's a fantastic, complete package with great animations, arstyle, level design and elegant mechanics. It feels very polished and I very much would like to see (and buy it) in a store. Congrats!