Very visceral, in some moments you can see that the movie hasn't that much production money, but the sense of desperation and claustrophobia are something that I never saw before in a movie like this. It tries too hard to be deep in the philosophical meanings, that's the bad part, also is very boring, it has long parts without dialogs or other else happening. But if you can handle this type of content and you are curious about it, you can watch it, I don't reccomend it because not everyone can take that extremely long scenes without content, but for a boring afternoon, it can be curious.