Works fine, plays well. Got all the bones. Only the roof one was tricky and I have no idea what the intended route was.
I managed to find a bug that blocks your ability to jump, reproducible by jumping and immediately crouching. Can softlock you unless you find a ledge to fall from to execute the buffered butt slam.
The button was tough to press, I had to cheese it by wall climbing from the bottom and then dashing.