Definetly one of my favs from this Jam. The gameplay is superb and the gameplay mechanics are interesting and well implemented. The music is cool... but the art is where the game really shines. The drawings are well made, the animations are ultra smooth and remind me a lot of Super Meat Boy... I seriously enjoyed it a lot.
My only complaint - and a minor one - is that the camera lerp (the delay at wich the camera follows the main character) doesn't really fit this genre of quick-response gameplay. A good example of that is when jumping, when the camera delay actually makes planning the jump harder.
I can't even imagine how you pulled this out within 48h... It shows hints of becoming a full game later... I hope you keep up with it, because it has a lot of potential.