Very cool idea!
I like the funny sound playing on failing and also the fact that you die if the two players touch. With this concept you designed very clever levels where you really have to think what you will do.
The only thing I would have changed is that on the game over screen there is no restart button so you have to close the hole game and then start it again. Also it was a bit comfusing that after you finished the game the death screen showed up.
Nevertheless a very cool concept and for a game jam it looks very polished so great work!