It's looking great!
Truth be told, I was secretly hoping for a game mode set aboard the Nostromo, where you'd play as Ripley during the climax of the first film; having to set the auto-destruct sequence and then making your way to the shuttle before the time runs out (whilst avoiding the alien), only to have a final encounter in the shuttle. Never mind though, that was a long shot.
I've very little more to say (other than gushing praise) at this point but I'm British so I'll have a quick moan none the less; about how the air-ducts look too clean for my tastes (more like the ducts in Cameron's 'Aliens', than the ones from Ridley's 'Alien'). Considering that's the only (ridiculously minor and inconsequential) gripe I've got at this point, I'd say this game is looking very promising indeed.