Thosha Your tactics for dealing with Lustlord worked perfectly. Buttplug helps hugely, because Qumdump can start buffing Attack immediately. Varia's Servant Frenzy helps hugely, and the equipment recommendations were all good. You need to get just a bit lucky for Vhala's debuffs on Lustlord. This is definitely a fight that you do not want to have drag on too long. Otherwise power will be an issue. For me, I got Lustlord on Round 5.
One other point to note: having buttplugs for Riala, Yarra and Qum makes it easy to make mincemeat rapidly of the three Unstable Chosen fought before Lustlord.
So well done from me for developing the tactics, personnel and equipment loadout for the Lustlord fight. Certainly the toughest fight in the game thus far.