The concept is good and I feel like you could do a LOT with that idea ^^ ! It was fun trying to figure how to pass each room =) !
However... The controls are really tedious. First, in the gameplay itself, the jump seem imprecise. I feel like there is friction on the ground and not in the air, so the character goes faster when airborne, it's really disturbing when trying to land precisely somewhere.
The control scheme itself is also really complicated : if you need to have a combination of keys just for one of the most important action of your game (Shift + Space = Separate), there is a problem xD.
Overall, that's a good entry, with a pretty unique concept, that needs a bit of polish =). Good job !