Impressive for such a short time. Cute little idea, 2nd time I've seen the concept from trying entries, the swap mechanic was nicer to use. Also understood the swapping because the other did that too.
For what little there is, the game is absolutely cheese-able. Whatever you're controlling counts as the player, so you don't have to do any puzzling, but just switch to something near the door and go in, lol.
The same applies for throwing the creature in the pit, if you don't swap fast you lose from it too.
Edit: Also, a way to restart without reloading the page/game would be nice.