Cute but I didn't have the best time. Got through the 1st level and partially through the 2nd. But I'm unsure how possible it is to get through that 2 tile gap under the 2nd or 3rd coin in the level.
Though my main gripes are really the gameplay. The player is too fast and a quite stiff. The camera is lacking with it, not panning far enough nor fast enough to match the pace. While the hunt for the coins is neat, the linear level design isn't great for back tracking if you do miss them. And with no camera controls or coin hints, it is a bit unfair to hide them in places that seem like pits. And with the punishment of resetting the whole world in a rather difficult to control situation wasn't a great time.
Of course, this is all stuff that can be improved though with some time! And the sprites, especially the background ones, are nice.