You’ve stayed alive so long while everyone else has died and you’ve been connecting with the Alien hive giving & taking I’m afraid to say that their failure at you’re behest would not be long lasting. See, the tables are going to turn and as you finish off the last of alien in LV 426 and nuke the colony you have become that alien and they all died only so that they could turn you into a very jealous Ripley who was going to be brain washed to bring this həll to Earth. You are not infected but your soul is imbibed with black gu and for everything you do now humanity wherever they maybe will perish. You just have to stay alive and be the same hero who is trying to survive every sociopathic eventuality by the company against. As you survive more and more, you would learn to cover-up, it will come to you naturally as you go along. This is your story about the end of humanity…