Having difficulty finding the green key to progress further.. and there is some kind of achievement if I could just time my jump better to reach it, which I am having massive trouble in doing so. Did find a secret though which is kinda of hard in this game as it requires a lot of doubling back and sideways, etc. I'll eventually will get it.
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!