Cool concept, as others have said it does feel a bit short - that's a good thing though - it means that I was engaged enough to want to play more. I think you could take this farther. You had some basic mechanics but you could add more, more obstacles, more kinds of walls, more complicated level design, enemies, etc. The idea has a lot of potential.
I do appreciate that this is a unique take on this kind of game. I have seen other games like this in the jam where you control two characters with one input system, but none where the character wrap around the screen. I would keep trying to add distinguishing elements like that.