Quite fun!, I found that some of the physics were really wonky, things like cats floating above the ground and I got stuck in a wall twice, but those could honestly just be unity web player being unity web player...
My only real complaint is that I played with controller, and the Y button is reset the level, but for a lot of fps games, Y is switch weapon, so I kept trying to "switch weapon" (cat) and accidentally reset.
Very fun overall