I'm on my second playthrough and I'm trying to find a different way to free Halsin besides killing everything that moves- which is what I did the last time. I'm finding it incredibly tedious thinking about killing 40 goblins once again, and was wondering if there's an alternative that doesn't include stacking explosive barrels around all the bosses (which is just kind of ridiculous that doesn't set off alarms) and then having to clear the party outside the castle.

I was reading generic guides that claimed the Priestess could be killed in her room without alarming everyone- but I've gone through every dialog option and each time we go to combat her first move is to call for help- aggroing the entire camp.