These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Critical Dissonance: Earned high marks from critics (with some saying it's one of the best films of 2014), but received a much more divided response from audiences, and made little money.
Darkness-Induced Audience Apathy: Between the enigmatic, sexually predatory alien and her hormone-bloodied victims, the film is very short on sympathetic characters or compelling conflict. The alien does seem to get better later on, but it's too little too late, and the story spills into full-on Evil Versus Evil at the end when she's attacked and killed by a would-be rapist. The deformed man is essentially the only sympathetic character who is explored in any real depth.
Love It or Hate It: The film is either a brilliant, psychologically horrifying Sci-Fi story or a bunch of boring and drab wank.
Visual Effects of Awesome: The scene where the alien removes her skin at the end is an incredible job by the makeup department.
Also the bizarre trap-floor that victims are sucked through seconds after the alien was walking on it.
What Do You Mean, It Wasn't Made on Drugs?: Particularly the opening few minutes, which consist of a hodgepodge of abstract images (which resemble an artificial eye being put together), random babbling syllables and words, and creepy-ass music.