In Epic Devil Assault this works great, but, Heroic? How, if I may ask, is a level 6 toon, or even a full party of level 6 toons, supposed to be able to complete that? (Of course, this is barring uber toons, in quest)
If I may suggest, and, I know this may take more time than it is worth. But, if you could adjust the Reaper levels for Devil Assault so that it could be set more like a challenge, than an average quest.