5-6 Yagudo Drinks, Ninja subjob, 2x Time Hammers, Battle Gloves, Life Belt, Phalanx Rings, Crow Gear (except hands), NPC set to Stalwart Shield, 1 Meat Mithkabob, 2 Ethers, 1 stack of Mulsums. Buff to full after cutscene, and approach Vassago. You will pull the initial hate thus the importance of Utsusemi (its more reliable than blink). Debuff the mob as best as you can. Pop Yagudo drinks as needed, and if you run low on MP use Ethers and Mulsums. The bottom-line is not to pull hate, because if you do it at wrong time you may lose the fight. Use Cure 2 on NPC and go to Cure 3 if NPC is low on HP. NPC will run out of magic quickly. Use seraph strike whenever you got TP ready. If mob is at very low health, you may use Holy but that may yank hate.