Okay. First off; that was wonderfully delightful to play and made me 'daww' a couple of times. The music was pretty good, the art is exactly my type (as in it's one of my favorite art styles, somewhat minimalistic yet has so much ... care put into it that it somehow looks minimalistic and utterly detailed at the same time).
And though it pains me somewhat, I cannot give this a full 5 stars. This game was fun, however it lacked challenge. Though this might just be because I was born and raised on platformers, I just think that you could have made this game a bit more challenging.
If you make another game in the same vein as this, I'd recommend making it a bit more challenging. However if you're aiming for a more casual crowd, keep it as is. It's not too hard, yet there are a few spots that made me stop for a second to think. This game was pretty damn good man. Major props and respect. Going to have to keep an eye out for more 'FAILNAUT' games.