Edit: I switched and completed it on the easy (aka hard) version *spoilers below*
Fantastic! The atmosphere is really top notch - I was expecting a barren wasteland and was pleasantly surprised at how alive everything feels. The challenges are comfortably in the 'very hard' category but are short enough to keep this from being considered lunatic.
The level goes from 'great' to 'cinematic' from the underwater lab to onwards. (The reveal of the true nature of the environment walking to the blue door was so cool).
Two small things I should mention:
The sideway doors (that look like sewer grates to me) blend in to the environment, and I struggled finding the door to progress after getting the drone repair key
I did the whole multi-screen walking sequence only to find that I needed the key and had to backtrack all of those screens. The reveal would have been even better if it was blocked before getting the underwater lab key.
P.S. you should consider making a thread for Sherpa as well