Death Mountain was guarded by lots of Daedric guards (guys in Daedric armor, not Dremora), some with sabercat pets, and four dragons. All of whom were friendly. What? Yes I was surprised at this too. Unfortunately all points of access to the little town were locked, needing keys (my 100 lockpick skill is useless!). I couldn't make heads or tails of the clues for the first key so instead Bagamul and I just parkoured around a bit until we found a tower with an unlocked door. Finally we were getting somewhere!
There were hostile draugr inside but they were nowhere as tough as the skeletons outside, so my sword cut through them like butter. Higher up I found two more OP weapons, twin katanas of dragon slaying (base 600 damage), a "sexy" book and finally, a flaming urn with a key. Key #8? LOL.
I like books with big ... pictures!
The key gave us access to "the underworld" which for some reason was guarded by a handful of frost trolls (disappointing if you were expecting the sexy vampire version). Past them was a huge chamber, with a skeleton army AND a dracolich / bone dragon whose first move was to disarm my 900+ damage sword! >_<
Dealt with it first (with the twin katanas) and then used the Arbiter's Helm to terrify the undead army, earning Bagamul and I some free kills. Once the effect passed however, they all swarmed in and slew my orc ally viciously. Obviously, he was avenged mere minutes later.