Other reviewers have already done a good job explaining what this movie is about. However, anyone who gives a movie a perfect score loses some credibility. It was good, but has it's flaws like any movie.
Who should watch this movie?
If you like a slow burn that's full of atmosphere, beauty, and steeping with anxiety throughout, you probably will not be disappointed. Think Hereditary meets Badlands (the Martin Sheen Badlands) and Of Mice and Men (If that's even possible to imagine.)
I was a bit irritated by the inaccurate subtitles because I hate with translators take their own liberties with their source material. But I'm not going to fault the film for that and it didn't detract from the story at all.
Who shouldn't watch this movie?
If you don't sprechen Deutsch or hate reading subtitles you should probably move on.
If you don't enjoy a slow expositive narrative expounded through long static camera shots, pantomime expression, and an overall feeling of apathy until the whole story is wrapped up and you can appreciate the forest for the trees, shrubs, brush, and snag.
Then you'll probably be bored out of your gourd.
I'll be looking forward to the next Govinda Van Maele flick!