The guy you want to kill is the loa speaker, riding his loa-infused bladetalon. He stalks around a small area by a small building. Clear the area of adds, especially the guy by the small building and his dino mini pets.
Speaking for hunters, he will ignore your pet's aggro and suddenly leap at you, hitting like a truck (I was 480 geared as of this writing and was being hit for more than 2/3 of my health - over 200,000k). I died 3 times trying to down him. Either bugged or in-line with a lot of the other 5.2 dailies: needlessly annoying. (I'm going with the latter as this is Troll content afterall)
There's probably some mechanic to make the fight easier (or not?), but I'm an impatient pew-pewer so after ONLY 3 attempts, of which I'm ashamed to admit, I blew all my cooldowns, shouted some choice words at my screen, and killed him.
The ground was littered with the skeletons of others so I hung around for a few minutes and helped out some others and did my good deed for the day.
Good Luck, and may you more cerebral adventurers add your strategies below. :)