The movie was disappointing on a number of levels, but let’s do the good stuff first: terrific CGI. Umm, that’s about it.
Now disappointments: SPOILERS AHEAD the story was confusing at points: 1) at one point David (Michael Fassbender), the artificial human, spikes Dr Holoway’s (Logan Marshall-Green) drink which will kill him but, apparently, not before allowing him to impregnate his partner, Dr Shaw (Noomi Rapace) with a truly horrid creature, which turns out to be the progenitor of the aliens in the movies of that series. Where did they get that technology? 2) Dr Shaw sees the ultrasound and promptly gives herself a Caesarian Section, after which she runs and jumps and, other than a few grunts and groans, is no worse for the wear. 3) the scientists lost in the pyramid find a new creature and promptly start ‘playing’ with it. Really? Really? What utter nonsense. And yes, it kills them and some others (I said there’d be spoilers). 4) Dr Shaw knows from sad experience that she cannot trust David, yet when he says he can fly the alien craft, she carries off his body and head (despite her recent C Section), with the suggestion that the two will be reunited, so that he can fly her off to some 'home world' where she is going to ask the aliens why they decided to eliminate humans. They were just responsible for savaging the entire crew, but she thinks she can get some answers from them (duh). And why would he not just fly her to earth when he's put back together, which he wanted to do?
I was also disappointed with the acting. I thought Noomi Rapace was terrific in the Girl with the Dragon Tattoo series. She is not as good here - the role didn't suit her, IMO. Charlize Theron was not convincing at all. She’s pretty, which is poor praise for a movie star. Idris Elba did well, but he didn’t save the movie. The others were just good.
Overall, unless you are a huge Alien fan or a huge sci-fi fan, I don’t think this will be satisfying.