Great map with a well-thought out layout and excellent detailing - except for the rocks maybe which seem quite flat especially on the top parts. Could have used some rounding off. I like the various subtle touches, e.g. the tech bits and platforms, broken parts, the lava effect. Nice exit portal.
The warning tape in its current form doesn't really fit with the environment. It's very bright and yellow, and of course the biohazard symbol doesn't make sense. Not sure why they would fence off lava pits with simple tape in the first place. Or was the idea that the pits only just appeared with the earthquakes?
Gameplay was okay, even a bit too easy on hard skill. Though I'm glad the map (at least in this third? version) wasn't Quoth abuse. Good secrets, the nails and lightning gun came in handy. I died once, squished by some damn lift!
What I didn't like so much was the way the monsters spawn in. In most cases they miraculously appear right around the corner or behind doors in areas you've just been to a second ago. It feels unrealistic und illogical. The repopulation itself makes sense and adds to the gameplay, but it would have been better with a proper rationale.
By and large, another great release. Demo