Physics-based games are always finnicky and require special attention to keep fun. Things like: the starting elevator being elevated one pixel and having to jump to get back in; the frozen person sometimes toppling over and sometimes getting back up depending on very subtle differences; the ceiling being one pixel too high for you to pass through and having to restart. Don't get me wrong, it's very fun when it works – but your job as a developer is to try to make it work as often as possible.
I also felt that the whole game was a bit too fast, all the animations and physics. But I guess that's just personal taste. And the jittery camera, which I'm sure you're aware of and just couldn't figure out how to fix it in time.