You can see from the comments that if you don't want to have to put any sort of brain power into a movie, you won't like this.
If you enjoy films that leave the narrative more up to your imagination and require some intellectual input, this is a superb watch. Amazing what they accomplished with such a small budget and cast. Beautifully shot and I was surprisingly invested in the characters despite the limited dialogue. Watch in the dark with headphones for a deeply disturbing experience.
I come back from the future. PP