I really want to love that quest, but unless you happen to have some ranged juggernaut the Elevated marks of shadows just kill the enjoyment of the quest. Every TR I try to enjoy that quest(I mostly solo to Gianthold) and every time I end up walking away from it frustrated because it takes so long to destroy the marks I have to range. That hallway with the duplicates is just stupid.
Theres no good reason why the marks have to have so many hit points. At least make them vulnerable to an element for extra damage or somethin...
It would be a Great quest if it didnt take 10-20 minutes just to get TO the actual quest.