Good to know.
I read up a bit now on the Pacifist achievement, and it seems you have to be quite aware of knocked out enemies.
First off, if you accidentally kill someone, the game won't let you know the achievement is not obtainable anymore. So you might finish the game and not get the achievement (which will suck hard!).
Second, after you knocked an enemy unconscious (indicated by Zz on their portrait) and you then move them around to hide them, they may die (indicated by a skull). I did not know this and haven't been paying attention to it for that reason, so I really hope I have'nt killed anyone accidentally this way.
Also, you are allowed to kill bosses, but not any 'adds' that might be present during a boss fight.
You also need to be careful of headshots with the tranq rifle, as this can sometimes kill an enemy instead of knocking them out. If this happens, but you did get the "Merciful Soul" xp, you are fine, even if the person does show dead.
The P.E.P.S also comes with a few cautions of its own.
For those going for the achievement, and are perhaps oky with some minor spoilers, more reading HERE





