Here's a somewhat elaborated list of what went wrong.
1. SJ ??? by Tower. Our choices were to either let Tarnak pop it mid-fight with the Kraken or fight the Kraken w/o SJ at all. We also could have waited to fight the Kraken until we'd fought our way to the tower, but that would have required some amount of backtracking, although we could have cleared a path through the Quadav, which would have given Tarnak access to here and then let him go get that free of aggro while we killed the Water Elemental, by the time he got it we would have been about ready for the Kraken. This later choice probably would have been a better idea, since it wouldn't require backtracking at all, but during the run things were already in motion & we hadn't thought of that ahead of time.
2. The Kraken spammed AoE moves & literally killed every single melee, and a lot of mages.
3. The golem also spammed AoE, bound the hell out of all the melees & was then pulled away from him. In my opinion this problem was handled poorly in general by the alliance as if he had been brought back in range of the melees they would have been able to keep attacking him. Regardless of the deaths here we still had time for the Megaboss which was all that mattered.
4. On the Megaboss pull we should have just gone for a straight out sac pull, but he doesn't always link. It looked like Tarnak had a clean pull on him since it started pathing around the corner. As it seemed he had completely pathed around it I provoked him, he then pathed backwards back around the corner, linked all the goblins, which then had hate on me. I couldn't use invincible to survive & train away because then the Megaboss would have come with me as well, so instead some people tried to rush in to grab the Megaboss before I died. They couldn't get him off me before the goblins swarmed me, so the goblins then all linked on those coming in, and subsequently the entire alliance.
Just a frigging nightmare in general. Even though it was our mistake on the pull, to some extent, nothing went our way in general. If we hadn't gotten so screwed over early in the run we probably would have had time to let Tarnak & I die on the pull, reraise just us, and then do the pull again.
I've scheduled a Qufim for the beginning of January, if we clear that then I will schedule another Tavnazia at the end of January, if we don't clear it I will schedule another Qufim.