Just saw it in London - in IMAX 3D. Cinema was full of 40 year old nerds that grew up with Alien/s.
The first act was full of cliches - ship's crew wakes up and don't know what's happening. They all have asbergers and hang shit on each other. The scientists act like truckers.
One biologist is swigging nonchalantly on a bottle of vodka while they examine the first ever alien head ever. Whatever.
The geologist character was awful.
Mr Enlightened UberMensh wakes up at the end (the big finale that'll answer all the questions) and just goes 'rrraaa' and kills everyone, like he's got the IQ of a WWF wrestler.
Who filmed and projected the holograms? What was it all about? Huh?
The positives: it looked great, the Prometheus ship was highly detailed, the 3D was fine, the score was okay (although I had prepped myself first with the score). Fassbender's acting was good. Production design was good.
The negatives: the dumb dialogue, all the cliches, the unresolved character motivation, the low-brow action (raa), the lack of originality in creature effects, etc.
Alien+Aliens is so good as a one-two combination, that this hasn't a hope to compare.
It felt like half a movie. I hope they have the Prometheus 2 greenlit and in the can soon to resolve this - that would be the only saving grace.
How does Shaw know the uber-race will greet her and her pet head? What if she steps out of the ship on the home planet, and the same thing happens again i.e. Mr Uberrace goes 'rrraaa' and tears her head off?