No spoilers, I didn't watch it till the end.

Rating: 4/10 (3 July 2017)

First off, Ridley Scott is one of the greatest directors this country has ever produced. You cannot deny he has made some classic films. Unfortunately this is not one of them.
Maybe it was the script. I'm sure there was one. When it comes to extending on a franchise you already have themes and characters that the audience already know. But if you go back to the classic book on script writing, Save the Cat, you need people you can emphasize with, but I couldn't find one. Halfway through I was thinking 'Who am I meant to care about in this, the alien?' In the end I didn't even bother watching the third act, so maybe it got really good, but I didn't wait to find out.
The direction of the film was good. The lighting, the effects, the sound, all quality. You can tell that there is a good team behind this production.
But maybe they were waiting for the next episode, which is what they are going to put everything in to. If so I wished they had gone back to the basics, making it more tense, less CGI.