Very well polished game! I love seeing the different ways people play with the theme; I had assumed it meant the player swapping roles with the obstacles, but there's just so much else that can be done with it.
I really like this level design philosophy of "here's a few constraints, there is no one solution." I know there are lots of games that get designed like this, but man, there REALLY need to be more games that get designed like this. Great work!