Hordes of the Underdark (HotU) is the second of the official expansion packs.
HotU adds a new campaign which continues the story from SoU, epic rules, Whip and Dwarven waraxe weapons, as well as the content listed below.
* = Also available in Shadows of Undrentide.
** = Removed from game prior to publication.
New Skills, Feats and Prestige Classes