I can answer that when I figure out what the f*ck I watched, but I enjoyed it. I think I get what happened, I'm just trying to piece it together. Did he have the 'lucid dream' about Sophia, and it was all going well. And then his mental state turned it into a nightmare, Sophia was gone and Julianna replaced her which enraged him, hence him needing to find out the truth behind it all. Then the last "Relax David, open your eyes.", was it all just a dream?

Really big mind f*ck, but I enjoy trippy weird films like that. Still not really sure what to FULLY make of it though, but definitely worth a watch.

I really don't understand why it underwhelmed the critics so much, can anyone shed any light on that? I heard it was a cult film so that's why I decided to watch it.