For those /loc inclined people like myself, he should spawn in the cave labeled "Rock People Lair", the farthest left entrance.
My method was fairly easy. Requires nothing more than the spells:
Vulka's Lullaby
Vulka's Chant of Flame
and the AA:
Fading Memories
1) Mez all the adds, this does require you running around.
2) Pull Cristoc Bonethug AWAY from all the mobs, very far away.
3) Cast the Chant on Cristoc
4) Fading Memories
Now all the mezzed mobs should be far enough away to avoid aggro, and Cristoc should come after you when Chant tics.
From there, for me at least, level 72 bard, 15.5k hps with Cred rk2, 2.2k AC, and 1743 ATK, and a T1 Journeyman cleric merc set to efficiant, it was basically straight melee twisting Erollisi's Cantata RKII, War March of the Mastruq, Composition of Ervaj, and Storm Blade. I burned Funeral Dirge, Song of Stone, Deftdance Discipline, and Puretone Discipline. Merc ended at about 70% mana.
Hope this helps :)