I'm not upset—I won't actually pick the game up again—but I was expecting to earn the pacifist achievement when I just completed to game but somehow didn't earn the achievement. I can't think of any point in the game where I killed someone.
Either, I didn't get it because I didn't spot that a takedown I did was actually a lethal one,
some of the "crazies" at the end ran into a mine when chasing me and that counted as a death,
a robot exploded and killed someone, or I did something wrong with the last boss.
I ran to the center, hit all the pods switches then laser beamed her for about 5 seconds.
I think it took me about 20 seconds and I did it on my first attempt. This boss was by far the easiest boss to kill for me. Was I not meant to kill the boss this way for the pacifist achievement? How was I supposed to kill the final boss?
Here's a video showing how I managed to defeat the boss. Did I get a glitched final boss or is this how it is supposed to be done?