Beat the game in low chaos mode and got the better ending. It took a lot of reloading but I finally figured out the guards positions and motions. The guards recognize you to fast, IMHO. I used a lot of blink and possession. Turned off the power silos by removing the whale oil. Great game. I still think Styx is the better stealth game. Maybe next time I will kill every thing in sight.. lol.
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!