Having defeated the undead, the Guardian Brotherhood listened to the other two remaining doors to see if they could discern what was behind them. The first has a small scurrying, a lot like the kruthiks they had defeated in the entryway. Behind the other, they heard large pounding footsteps of some kind. They chose to go for the kruthiks first.
Entering the room was easy, and inside they found what looked to be an old banquet hall, though the food on the table looked as though it had been sitting out for a thousand years. And, there as a nest of extremely angry kruthiks and the kruthik hive lord.
Boswell, Cherith and Pilindor blasted from the doorway as Ibaka and Sid made their way into melee. A well placed fireball from Boswell took care of most of the hatchlings, and the combined efforts took out the adults quickly. The hive lord was more difficult, but for the Guardian Brotherhood, she was no real match.
They searched the room and found another token with a labyrinth pattern on it, and began wondering what these were, and how many there were.
The next room was also easy to get inside, but its contents were far more interesting. The middle of the room was dominated by an enormous cloud-like pillar, which Boswell (and Sid, incidentally) identified as Fog of War, a deadly obstacle. The room was being patrolled by a large psychic sentinel, who was aided by two shardminds. As the sentinel methodically marched around the fog, the shardminds used the portals on either wall for more maneuverability, and eventually the Guardian Brotherhood realized they could also take advantage of the portals.
It was not an easy fight, but the heroes won in the end, and after burning away some of the combustable fog, they found some more gold and another token.