So I'm only a little bit of the way into it (haven't even encountered the Alien, or any real antagonist, really) yet, but I'm loving what I'm seeing so far. Last thing I did was meet Axel and move a little bit forward with him, before I got to a save station and shut it off for the night. Creative Assembly absolutely nailed the look/feel of the original film. The Sevastopol is gorgeous, and I cannot wait to further explore it.
The only thing that is slightly off-putting so far is the character models, though I'm not sure if that's just because of the console I'm playing on or if they're a little off in general. Something about them just seems a little twitchy. The environments are astounding, though.