Just killed this guy solo on my level 33 Enchanter, TLP server during Luclin expac wearing mostly original-era gear (some Loam Encrusted, some quested, some cloth, nothing fancy - 147 INT and 171 CHA). Had a cleric at the entrance hook me up with HP and AC buffs, but didn't really need it.
Invised past all the trash, and levitated over to the roof. Dhampyre conned yellow. From the ceiling I calmed the namer and two static spawns. Waited for one roamer to pass by. Charmed one of the guards (conned even). Casted calm on the remaining guard and named, then pulled named with Tash.
Both the named and guard came up (calm sucks sometimes). Mezzed the add, and sent pet at Dhampyre. Charm pet had no buffs or weapons whatsoever; was a warrior-type mob. I casted one suffocate on named, and rooted him in place. Pet and named went down about the same speed. When both were at 10% I dropped charm and killed pet with one nuke. Dhampyre died with one nuke as well. Easy as pie. Health down to 85% from harm touch and unexpected add during pull (I didn't have a rune up before pull, doh), and 70% mana. Was all over before mez wore off the add.
Dude dropped the cloak. Replaced my crappy Rat Pelt Cape. Gated out before mezzed add broke free..
Was really shocked by how easy this was for an under-geared level 33 enchanter. No merc or anything special. Would have been a little sticky without pulling from the roof, but I'm sure it's doable even when attacking from the ground floor.