LogFAQs > #884826893

Pretty much there's 2 ways to go about it-

The first is the ARMS method: kill the left arm 10 times, then kill right arm 3x, then main body.
It's safer since you free your OHKO provoker after L arm is down and it's relatively easy until you kill the Right Arm the second time( then you have to tank 2 Genocide beams a turn) and the last phase( cause World Destroyer), but you're running through a total of 13 lifebars, so it takes hours.

The other way is the Brute Force method( which I did)- kill Main Body, then Right Arm, then Left Arm.
Much quicker than the ARMS method, but it's also a harder route for a few reasons:
1) you'll almost always be down one member cause you kill the Left Arm last( which also makes the Ramuh mission a touch harder and to be saved for last because electric attacks to it lead the arm to counter with a very painful AoE)
2) It is REQUIRED that you do at least more than 500k per turn to out damage the R arm heals
3) you'll be taking the attacks of all three parts- including World Destroyer once you pass 70% and every 5 turns past said threshold

It gets easier as it goes on; once the main body goes down, you just have to deal with 8 buffed Physical attacks from the right arm- usually a good idea to get the Right Arm's life down as much as possible during the main body phase without killing it- and once the right arm goes down, the Left arm just keeps killing your OHKO bait and nothing else, so you can take your frustrations out on it.

Also, note that 100% provoke can override the "highest atk" focus, so if your OHKO bait goes down without a reraise and you have someone with 100% provoke(WoL, Wilhelm), they can take the hit instead while you recover the Re-raise.
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