I definitely agree with what's already been said about the art style, though I personally don't actually have any issues with the player being the same black as the buildings, I think it adds to the silhouette look of the the whole game.
I do have a couple of suggestions, firstly I think there should be a longer time between the game starting and the first jump in order to let the player get their bearings a bit more, and secondly I'm not sure if the double jump is really necessary to the feel of the game, as far as I can tell all the jumps are possible without it and as weird as this sounds for a game of this style it detracts from realism a bit.
But anyway, great job!