I thought the bit in the hallways with everything going backwards was a nice touch as it was obviously a nod to the red room in Twin peaks.
I was a little disappointed with the ending though. I had cried at several points of chapter 1-4, by the time everything went on in chapter 5 I was just kinda numb and uncaring. I…

The only nightmare is the ending. Terrible, terrible, terrible. But the episode was very cool. Hopefully the series shakes off the “Gone Home with time travel” label and becomes the MGS2 or Spec Ops of its genre.