I read about some guy who slept on a glacier and turned into a demon when they woke up, so I decided to try it out. I didn't manage to turn into a demon but after the first night my fps inexplainably turned to 1. A few minutes late some weird crap happened and the ice next to me suddenly rose up a z-level, now I can't get back to land. anybody know why any of this could be?
EDIT: Some crazy stuff O.o the "hallway" is made of open space...
EDIT2: should I climb down?
EDIT3: I climbed down and instantly started drowning with no way up even though I have adequate swimming

if the pic doesn't show up, click the X
Edit4: