First off, they are pretty obvious even from a distance, just look for the fog/frost cloud. Very cool especially the pyro dogboys. Bats are an annoying joke that do virtually nothing. Crystals without killing a golem, thank you! Not exactly a labyrinth but pretty good size.

My gripe would be the breakable ice walls, they seem a bit too subtle. I would like to see a blue glow or shine, something beside the obvious crack in the wall to be an indication. Also, in case someone didn't notice, always check above doorways because many of them are covered in fenris? hair that can be broken and recovered.

So far, over a dozen hairs and half a dozen claws, which by the way stat-wise seem pretty awesome.