First and foremost: high praise to the special-effects, make-up, visual & graphics team etc. I grimaced and tensed throughout the film (in a good way) as it was rather gory.
Unfortunately, aspects of the storyline felt slightly disjointed. However, the primary premise of the story and the themes explored in it were thought provoking, whilst also being jarring.
I also felt that a large part of the acting was incredibly strong and was most impressed that the film honoured a respectable run-time of 1.5hrs so, the editing team were also fantastic in this case.