Best at its darkest, average at its brightest

Rating: 7/10 (2 January 2017)

I assumed the highlight of this movie would be the chemistry between the two (hyper)charismatic leads, but surprisingly the best part of the movie was it's exploration of complete isolation and loneliness. While it's not much of a spoiler, I will not reveal anything specific about what happens, other than that one character faces a very interesting moral dilemma, and that this is a major part of the film.
But somehow, this is not the major plot point of the movie. The latter part of the film is about a different problem faced by the protagonists, and is more blockbuster-like and less interesting. It's not bad, it's still a good movie, but it feels like the cop out on a cool idea (the moral dilemma) because they feel obliged to have lots of action and peril.
I liked the setting and the scenario, and I would not feel bad recommending this movie as a light scifi-watch, but in it there's a much more interesting movie in the moral dilemma.