Just wondering how many other people have done this. I checked through some other solo threads as I assumed Monks/DKs would have an easy time with this, but it seems to be challenging for everyone.
Talents: Posthaste, Binding Shot, Aspect of the Iron Hawk, Dire Beast, A Murder of Crows, Glaive Toss
Glyphs: Animal Bond, Mending, Endless Wrath
I disengaged when everything started chasing me and my corehound despawned at max range
Recount of my damage
Recount of my corehound's damage
Achievement, Recount total and my new mount
Before I started, I thought 7.7million hp (25man) wouldn't be too challenging, but I forgot he casts Will of Sartharion and boosts his hp by 25%. As you can see from the last screenshot, I ended up doing 140K dps and 10.6million total damage. I don't even remember, but I think it took about 20 tries using different combinations of talents. I really enjoy the challenge of soloing old content and, for me, this ties Yogg10 3Lights for the amount of time and frustration it took to finally get a kill. Well worth it knowing I earned my Twilight Drake by myself.