If you happen to be a gnomish engineer, the Gnomish Cloaking Device makes this quest easy to solo. Just use it near the top of the stairs, run in until the quest is complete, then run back to the stairs. Nothing on the top will aggro on you while you're invisible.

actually, since 2.3, the guys at the top of the altar are no longer elite, just a little higher level, one is a 50

Actually, there are two named 50's up there, very close together, plus another mob that might be a minion for one of them. I couldn't attempt Quiga without pulling the other 50.

The altar itself is very easy for a druid as long as you are high enough not to aggro the mobs while stealthed. Just kitty stealth; you can walk right up and right back down again, no problem. Also, I got 6300 exp after the 2.3 patch.

I completed this as a 41 hunter just run as far towards the steps as you can. You will die. Come back and resurrect drink some healing potion and finish running to the top. Not the best way to do a quest but at 41 hunter the only way I know to solo this one.

done as 44 warrior, just ran up with mount, jumped off it
died and spirit came at the GY near horde village

I'm a 43 hunter and i simply just killed the dudes on the stairway then sent my pet up the top and made him attack each lvl 50 and use pet mend, ran in and out then used aspect of the cheetah to get down fast with no problem, cept when my pet died. T.T

Had a most pleasant experience this morning trying to get to the top as a 47 Warrior. I'd killed all the other trolls save for the two level 50s and was faffing about, trying to find another way to reach the top via the sides instead of just running up and burning Shield Wall (me loves me cooldowns).

Long story short, I accidentally pulled the two 50s from the side, but jumped down and ran away. When I returned to the top they had disappeared; either they'd gotten stuck on evade mode somewhere along the line or a squad of personal Rogues watching over me had assassinated them and made off with their corpses before I returned. :)

easy as a level 45 ret paladin turn on https://vanillawowdb.com/?spell=1038 Blessing of Salvation and run up the steps turn on divine shield and jump up on the alter and then run away!

If you're a warlock, just bring out the Voidwalker. Clear the mobs on the stairs, then run up onto the altar. Once you're up there wait until your health goes down some then you can just Sacrifice the Voidwalker. Jump off the altar and run as fast as you can while avoiding as many mobs as you can. Once you get away from the altar just try to get the mobs off you with Howl of Terror, and use your healthstone/potions when your Sacrifice inevitably wears off. Once you get the mobs off you, start summoning your Felsteed. If you have you're hearthstone already I'd be better to hearth back to the peak than ride all of the way back through the many wolves, trolls, and owlbears that are all too common in the Hinderlands.

EDIT: If you're really good you could throw a Death Coil on one of the trolls before you jump off as well to heal before your Sacrifice wears off. ;]

^^ I on this quest do only big circle on the Altar of Zul go to Bosses on this Altar (Qiaga the Keeper) and back to Gryphon Master Talonaxe - and quest Complete :)

45 Hunter with a 45 Gorilla.

I managed to complete the quest without any outstanding damage done to myself or my pet. I started by killing the mobs on the stairs and then I threw a Mend Pet on my gorilla and sent him to aggro Morta'gya, Thundestomp also managed to catch Qiaga and a Vilebranch Soothsayer. Ran up to the alter to complete the quest and took off down the stairs without Aspect of the Cheetah on. Recalled my pet as soon as I got halfway down the stairs (putting him on Passive just in case he decided to get angry at the guys throwing lightning bolts at him) and continued to run until all mobs deaggroed.

If you want your pet to live throughout the ordeal, make sure to keep Mend Pet up on him at all times. With Rank 5 (200 health/3 secs) I managed to keep him at about half health while taking a couple lightning and shadow bolts myself. Nothing too troublesome though. Also watch out for the two mobs near the altar (Soothsayers for me) they will aggro you once you meet the requirements for the quest. I just ignored them and kept on running.

just a side note in zandalai aka troll zul means grand or big so this is the big alter

extremely easy as a level 46 lock send in your VW and sacrafice him as he is about to be killed easy

Just completed as a lvl 48 warrior...lined my horse up with the altar and just galloped straight trying to avoid mobs ..straight up to the altar and jumped over the back( completing the task..lost a bit of health but heart stoned out on landing after i mined the Gold ore

I did it without sacrificing or even using my mount. I killed the npcs at the steps pulled the first lady infront of the two lv. 50s and then went to the side jumped the corner accross the fire. Killed the other guy by the alter then just simple walke up the the alter and got the quest complete.