It's my second play-through of IWD II, and I'm stuck in the Ice Temple. I decided to finish all ranks at Oria's game room (I'm not taking a single step until I'm done with that
I managed to finish 3 ranks with my cleric. Summoning sometimes worked, sometimes didn't... - some of my summoned allies were taken away to another room, some of them remained, I couldn't find any logic in their disappearance, though.... Since this is not a very reliable method, I'd like to know how you defeated them? What character did you use? Is it possible to finish them all off with a single figther (with different weapons and enough healing potions equipped)?