It took me a while to get through these linked levels, but then that's perhaps obvious. At least reaching the conclusion alive is more a matter of running straight and fast than picking the right path out from among many. Moving so quickly, though, I didn't really get to take in the sights beyond a general sense of relief at getting away from the "tainted" interiors.
The final room, for all that there really isn't time to take it in, did set off a few suspicions with me. Ian had seemed in bad shape the last time I saw him, and now he's back to normal except for the fact that he shows no picture in the conversation terminal...