Breja: Is there some very low difficulty setting in the game, for someone who just wants to go through the story? ... Sneaking around for twenty minutes just to have my face bitten off because I cast a shadow in the wrong place or something would make me quitt long before the end credits.
So, first of all, the story is not worth it. It provides a nice look into the Alien universe, and it does expand it a bit, especially with decoded logs from Nostromo, buuut it doesn't really reveal anything new about the creatures themselves and only very little about the space race, various other corporations and whatnot. If you're really only interested in that, I would recommend you watching a longplay or a let's play (if you're not a fan of idiots screetching into the mic, there's always
Helloween) I suppose you could play it on low difficulty and just attempt to cheese trough the game, but I can't imagine how could it be enjoyable.
Breja: don't even mention Prometheus, just... don't
Excuse me, Prome-what? There wasn't any Alien-related movie done since the release of Alien3 DC. Shame no more information on Space Jockey exists.