Best way to summarize it: "HMM..."

Rating: 6/10 (2 August 2017)

I'll go by a sorted list of things that influenced the rating I assign to this movie:
+ Nice looking sets
+ Nice looking CGI (though the aliens are a bit boring)
+ Nice, clean cinematography
+ Mr. Fassbender's acting is enjoyable to watch
+ Miss Waterston does her best with the role they gave her
+/- Not very interesting weapon designs
+/- Unmemorable other characters, nothing iconic in them
+/- Ironically the only bits of tension in the movie do not originate from any aliens, confusing

No exotic/alien flora makes the "alien planet" feel like a random cornfield or swamp right on good ol' earth, suspension of disbelief does not set in

Hideously incompetent crew - seriously WHO WOULD HIRE THEM IN REAL LIFE?!! C'MON!!! SHOW US SMART CHARACTERS FOR ONCE DAMN IT!!! AAARGH!!!!!

The scriptwriters were either oblivious or obsessed with the TVtropes website because they used every cheesy trope there is

Predictable and unoriginal plot

Villain has an extremely unimpressive hideout that makes little sense

Confusing story lapses (was there stuff cut out?)

Whenever the writers run out of dialog, characters are screaming at each other while the camera shakes

Engineers in the future forgot how to make shatter-proof glass

If they could fire all the scriptwriters, hire some common-sense advisers, and forbid the director from messing with the story, other (future?) movies in this franchise could have a decent chance to redeem themselves.
It isn't as terrible as some of the 1-star reviews would want you to believe though. It ain't TRASH. The plot is just ruined by a lack of common-sense.