Cool idea, that you can manipulate the game. The movement is very slippery and the high jump value (for me only 5000 works) is, compared to walk speed and gravity, irritading.
I started the game a second time. And now I can manipulate more then the first door XD
I'm not sure, if this is the real "broken" part, but some aspects of the game were really strange an changed from play to play (The menu doesn't closed, the doors won't open, no respawn after dying, cliping in walls).