Managed to save two outpost and two hijacked towers, once of which I used a small helicopter to land on it's roof and disabled the messages. Hilarious and very fun. Not sure I am playing it as the developers wanted... hehe
Alright! It was tough as I had a hunter alien on my heels the whole time, but I was able to reach Nicole, who was attached to the Marker. I defeated her (eventually) and made my escape with Ellie. What a cool game. Final boss and game ending! Great stream!