Note:Pulling or aggroing one type of mob will cause the rest of the mobs of that type to link, regardless of where they are in the chamber. When pulled, it appears that everyone in the alliance gains hate, regardless of whether or not they have acted on the mobs. Members of other alliances will not necessarily gain hate once the first alliance dies.
The chamber appears to select two groups of monsters from the below list of normal monsters. The number of monsters varies with the type chosen, and are always in groups of 6 or 12. Either two groups of monsters and a weaker boss or one group of monsters and a stronger boss (a single boss can spawn as either strong or weak) will load.
Huginn, Muninn, Heithrun or Saehrimnir will not be immediately seen. They will pop as you progress through the chamber's monsters. Muninn and Saehrimnir will leave behind a message stating "the chamber's stagnant aura has somewhat cleared" if defeated or left to depop respectively.
Huginn will leave behind an Armoury Crate containing various consumable items upon defeat.
Muninn will weaken the enemies upon defeat. A message stating "the creatures lurking in the shadows have calmed" will be received.
It is currently unknown what Heithrun does. It is, however, reported to be the rarest of the four.
Saehrimnir will strengthen the enemies if left to despawn. A message stating "the creatures lurking in the shadows have become restless" will be received.
Grimgerde is the name of one of the Valkyries in Richard Wagner's opera Die Walküre.