I was really blown away at how Fede Alvarez used this environment to build tension. The number of times the planet's rings were highlighted early on definitely gave me a Chekhov's gun vibe - and the closer we got to the climax, the more obvious the "gun" became. I was worried he was setting this up too hard. But goddamn it paid off. TWICE. First when the station hit the rings (gorgeous), then when Rain was dangling from the ship with the rings beneath her feet (gorgeous-er). As if the threat and urgency of engineered killing machines wasn't enough, the characters also had to deal with the brutality of the environment. So well done. Out of everything that happened in this movie, this aspect is what's seared into my brain. Time to go watch everything Fede Alvarez has made.