Finished, loved. But for a sequel there are some things I need.
1) More varied locations... The locations were AWESOME really cool, looked and felt incredible just to be in. But even the most delicious bacon gets boring if you eat it every day. I want more verity in locations, I know there are a few stark changes but not often enough.
2) The game touched on Bio-shock/FallOut 3 style open world to explore but I think it could be expanded on... How about real colonies I can go too and from, real time gangs and groups roaming around that I can run into, befriend or become a wanted enemy of. All round smarter more substantial human interactions would be awesome.
3) More changes of pace, again there was some cool ones I wont spoil but again they were too few and far between. I loved the stealth gameplay but I need something to break it up once in a while, same with turning on electric and hacking and finding this and that.
And finally a suggestion.
Chases! If you haven't seen the 'bear chase' from Condemned 2 go check it out. It's the most scared I've ever been in a game. It was frantic, claustrophobic, tense, scary and fun all at once... I think it would be awesome in an Alien game.