I have a few questions about the troll achievements.
How do you actually "spare" all trolls ?
With the one in chapter 1 is obvious how, but with the two in chapter 2 do you just need to talk to them and not kill them ?
I also read that there is a third troll in chapter 2, but it is a normal enemy and you can kill him and it doesn't count toward the "spare all trolls" achievement. Is it confirmed ?
When do the troll achievements unlock ? End-game or at the end of chapter 2 ?