Goodman Games

or; What does the Bleak Theater look like in season?

Long story short, after clearing the upper castle and the caverns leading to the Immense Caverns, my group left for 2 months in game before returning to explore. The only 'survivors' they left behind were the Duergar Bookkeeper on level 2, who escaped using his tricks and Vulgarsis with whom they established a 'peaceful' relationship.

The party is 10th-11th level. Still in line with the levels of the dungeon. What should they find when they return?

The cockroaches of the monster world: orcs and goblins.

I think the Duergar should be waiting in ambush. I would trap the hell out of everything and jump them when they are near dead. Then drag them down into the Underdark kingdom of the Duergar.