Hullbreaker HM is an example of how dungeons shouldn't be designed.

[Kaurie]

Vote Hullbreaker HM for worst dungeon!

Haha well I dislike it, but it's mostly that I find it boring - rather than actively hating it. So, I wouldn't say worst dungeon. Personally, I place the following below it: Aurum Vale, Stone Vigil, Qarn NM, Arboretum, Pharos HM, Stone Vigil HM, and Snowcloak.