This is my first playthrough and I think I started this quest without realising it.
When I first got to Chapter 2 there was too much going on at once and so it got slightly confusing, so a lot of Quests were added and some where overlooked to begin with, this Quest been one of them.
Anyway, after progressing through the story I have to enter the fog to kill some of the spirits (after going to the hideout place), but if I enter the fog I fail The Butcher of Cidaris Quest (Also failed the Little Sisters quest, but I managed to complete this)
Before continuing with the story I want to complete as much as I can, the objective for this Quest now is to go and speak to the veteran soldier in the camp canteen. The problem is the soldier is not there, there is only the relic peddler and someone asking for orens for some book or something.
So is this a bug or am I missing something? I believe this quest lets you fight in the arena which I want to do. I think his name was Manfred if I am not mistaken, but I cannot find him anywhere and I have looked all through the camp.