Hideout of Herwennefer (Location)
An elephant camp in the White Desert Oasis.
The key to Herwnnefer is to keep running. More than any other elephant, Herwen's howdah's are slow on the mark for firing, and the elephant herself is slow to engage and trample. Just keep circling and firing. Don't let up, or the elephant's health will restore itself, but don't stand still.
Do jump in with an adrenaline attack when it looks safe, and particularly when the enemy's health is low, to cut this titan down to size, for an ability point and location completion.
This victory also gives you the legendary Shaman outfit.