This was an excellent movie, similar to #Arrival in quality; the horror is more in the questions about human nature than in the mutant monsters.
If you've ever read The Colour Out of Space by HP #Lovecraft this feels like an extended version of that story (And that's a really good thing)
Also, I'm not sure if the author is aware of the similarity, but that scene with the mutant bear was reminded me of Severian's encounter with an Alzabo in The Book of the New Sun.