I'm going to be completely honest, I don't think I've seen enough of the Alien from Isolation to really judge it. From the trailer we've gotten (and the, like, 2 frames we see the Alien) it looked pretty acceptable to me, but I also haven't followed the game *too* closely so far so I'm wondering if there's other artwork or images I haven't seen it. Does anyone have images they can share?
Then again I'm generally really lenient with how Aliens are depicted as long as it gets the general shapes and concepts right.