Tursh

Difficulty:  Minimum with life spec'd, 200+ without
Level Restriction:  150+
Timer:  3 Days
Can be Sol'ed?  Yes
Rewards: 10.2% of your level, capped at 101M

Tursh is a Demigod amongst those we call the Ruschk.  He was an ally of Grael, the Ruschk gladiator who fell to darkness and the one who slayed Sezzherei for his treachery.  Now he makes his home atop the rim of the Shattered Outlands, waiting for someone to come and challenge his might...

Step 1:  Preparations.  In order to enter Tursh's home, you will need to appease the Ruschk Challenger who guards the entryway.  That means massacring high level Ruschk until you have collected 5 scalps.  Only Kartaks, Laktars, and Draktehns have a chance of dropping scalps, so you will be in for a rough fight.  All three types hit hard, debuff you thoroughly, and have a lot of health.  Although you can kill them without imperilling them, it will take you next to forever.  Your best bet for hunting grounds is outdoors in the Plains of Ruin.  These high level Ruschk do appear in a couple dungeons, but you will have better luck outdoors.  Ruschk are weakest to bludgeoning damage and only do bludgeoning and frost damage.  Be sure to bane your shield, as they have a habit of brittlemailing and luring.

Step 2:  Tursh Dungeon.  When you have all 5 scalps, head to the Ruschk Challenger, located at 92.4N, 47.5W.  Those coordinates are atop the ridgeline that surrounds the Shattered Outlands, so you do need to briefly enter that nightmare of a valley and climb up the western wall.  When you arrive, greet the Ruschk Challenger and he will give you a text.  You already have done what it asks, so start giving the Ruschk your scalps.  Upon giving him the 5th scalp, he will flag you to use the nearby Ruschk Totem.  Do not touch it prior to giving the Ruschk your scalps or it will debuff you quite thoroughly.  When you are ready, use the Totem and you will enter Tursh's Lair.  As you can see, the dungeon is nothing more than a small room with 5 Ruschks in it.  Take up position in the corner nearest you and lure out Tursh.  You should be able to fight him alone if you are careful.  When he dies, loot the scalp from his corpse and run to the exit portal.

Step 3:  Rewards.  Return Tursh's scalp to the Ruschk Challenger outside and he will give you your XP reward.  You will receive 10.2% of your level capped at level 202.  Past that, you will receive 101+ million XP.  The timer on this quest is short, so you can repeat it frequently!