I haven't posted in a while due to extreme hours at work. Things seem to have calmed down for a little bit at least. Due in part to my schedule and to others in our regular 10-man group, we still haven't progressed beyond Festergut. We are, however, getting very good are charging through and one-shotting all the Lower Spire bosses (and even 9-manning all but the Deathbringer), so I'm sure we'll get Rotface down soon. We do have a tendency to wipe a few times on the trash leading up to Marrowgar though...
The best strat we have for Festergut so far is to keep 7 people right on top of him and the minimal 3 out at range (often all hunters). The trickiest moments come when the two people with spores are the current tank and the pally tank healer. Rapid adjustments must be made. This is where 10-man is actually a bit harder than 25. The loss of one healer due to movement represents a loss of 1/3 to 1/2 of our total healing capacity. We have only been successful with 3 healers so far. My guess is this will stay fairly constant, but our dps is picking up quite a bit as we get more 251 pieces (and a few 264 crafted or emblem items to round things off). That should ultimately make this fight easier. If we can get him down before the second blight (exhale) phase, our chances of wiping will drop by at least a third.
Anyways, I'm back, at least for a little while.
An update from me and closing my guides
5 days ago