Final Fantasy 13 Mission 59 Two Faced Fiend 5 Stars

Mission 59 Battle

Equipment-wise, Accessories that add buffs will be of minimal help since Zirnitra will dispel most of those anyway. However, giving Fang a Genji Glove can be helpful since she can hit the Mark for more than 100,000 HP per blow. This will speed up the last portion of the battle considerably.

One of the most annoying things that can happen to you in this battle is having Hope and/or Fang hit with Slow before Snow gets a chance to Provoke Zirnitra. Slow is especially obnoxious because you have to cast Haste twice to undo it -- once to remove Slow and another to restore Haste. You can reduce the chances of this happening by taking two Glass Orbs from your inventory (you can buy them at B&W Outfitters for 6000 gil each if you don't have any), upgrading them to maxed out Dragonfly Orbs, and equipping them on Hope and Fang. This will give each of them 60% protection against Slow, which should make this Mission go a bit smoother.

The battle itself is total pandemonium. You are really going to need to keep an eye on everyone's HP and status. Start with #1 just long enough to cast Enfire on Fang. Your first priority is to get rid of those stupid Certoraptors, and having Fire on Fang's weapon really speeds that up (see below). It is a nice coincidence that Zirnitra is also weak to Fire. Switch to #2 and have Hope and Fang Stagger and then finish off the Certoraptors one by one. If Snow's health gets low, you can switch to #3 long enough to heal while still doing some damage. If Hope or Fang loses Haste or gets Slowed, switch back to #1 and speed them up again. Once the Certoraptors are gone, you can quickly get rid of the Certosaurs that they called. Finally, you can focus on Zirnitra. Switch to #4 so that Hope can cast a fresh round of Haste on himself and Fang as well as any lost buffs while Fang tries to stick debuffs on Zirnitra. Back to #3 for one round so that you can heal Snow, and then back to #2 to pound on Zirnitra. By the time you Stagger him, his HP will be nearly depleted anyway, but Fang can finish him off quickly from there.

If Snow dies or if Fang or Hope gets hit with Zirnitra's first attack (which can inflict Daze) you may need to Retry.

I tried this battle without doing the first step of casting Enfire on Fang, and it took nearly another full minute to finish the battle!

One last note -- A PS is possible if you use Deceptisol, but I can't imagine why you would want to. The battle is frantic, but you certainly have enough time to get the job done without Deceptisol.