For most people, the movie is slow and boring and you find the storyline everything, everywhere all at once.
But once you get the grasp of the story you are set for a good, deep and dark movie. The english dubbed version doesnt sound as good as the arabic, So I watched in Arabic with subtitle and it sounded way better.
All four lead actors are phenomenol. While the story leads you to the concept of hallucination from dehydration and injuries, the reality is far from that. The film is well directed and the end solves all the puzzle.
However it is not a thriller but a pure psychological thriller.
Dont compare the movie with anything and you will love it.