To start with the negative points. In a few scenes, they use pretty pointless CGI, which feels quite awkward in a movie that is 99% practical effects. Furthermore, the soundtrack feels very Hans Zimmer-like. I wouldn't be surprised if it's actually temped, probably on Dunkirk and Blade Runner 2049. It's not necessarily bad, just derivative.
And I'm not entirely sure if the story makes perfect sense. Further viewings are definitely needed here.
Apart from that, this movie is f*king bonkers!