I've watched several others get the emblem to drop after 1-5 clears. I've done Kell's Vengeance 14 times (would have been 16, but it soft locked twice) and am sick of doing this mission at this point. The only problem I had was when someone opened the chest before I got there because I was watching for the end when Skolas gets back up, and missed out on my loot. I feel it was supposed to have dropped then, but because I missed out, I wonder if the game thinks it dropped, so it won't drop for me now. Is anyone else having this problem?