so by now ive read about at least 5 diff. large quests that cannot be completed because of simple scripting bugs! i personally have encountered at least 2 of them in my playthough already and im maybe 50% in.
one is the quest where you defend the trader from house doemel - eventhough i defended him and he still lives the quest is simply stuck at "kill danna" (shes llying dead on the floor)
the other one is the masters tools on endless depth lvl 12 where you are supposed to take the quest from the vitrachs but instead they auto attack you, then the dialogue starts, you get the quest and then are forced to kill them all since they will still attack no matter what. this is game breaking since you cannot progress further down qwithout getting past them, forcing you to kill a whole npc faction and miss out on the quest and exp for no reason but buggy scripting!