Quote Originally Posted by hrdndv View Post
I spoke too soon. I just tried to close the quest and Dural Tharal doesn't recognize that I killed Atmos (with help) a good dozen times and still have 5 over-aspected crystals! BUMMER!

This is one major glitch on a quest full of glitches... The rewards may have been excessive at first but now they are snively. Makes the whole thing a total waste!
It's not a glitch -- you need to kill the Deepvoid mobs (the ones that spawn WITH Atomos), not Atomos himself.