It wasn't a smooth run, but it's a perfect run so I'll take it.

Ace is trying to remind people that he is still doing fine in CHAOS.

Confronting the Core (CPU Raid) CHAOS complete feat. Ace: 84 turns, 17252 HP damage, 773660 score, 5 breaks

Ace EX+3LB, Serah EX+3LB, Rosa EX+3LB, Ramuh, Emperor EX+3LB, 773k, Keeper of Record, https://youtu.be/cmc95umDp6o

Written Strategy:

Ace (70/70, 15/35/EX+3LB/Bloom, Boards: ISRLT)

ATK +108+108+108, MAX BRV +330, Mighty Spiral Combo ★★, Spiral's End Boost ★★

Serah (70/70, 15/35/EX+3LB/Bloom, Boards: ISRLT)

ATK +108+108, All Debuff Attack Boost ★★★★★★, Charged Moonlight Boost ★★

Rosa (70/70, 15/35/EX+3LB/Bloom, Boards: ISRLT)

ATK +108+108, MAX BRV +330+200, Devoted White Mage Boost ★★★★

Ramuh

Friend Emperor (purple, replaced Ace)

Remaining skills charges at the end of the quest: Ace 0/0, Serah 0/0, Rosa 3/1

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• So at the initial stage of the fight we have 3 enemies, so it is good that we use more skills here to not only benefits from splash damage (Great Spiral Combo+, Jackpot Shot, Wound+, Ultima Arrow, Luminous Arrow), but also to avoid being overwhelmed by numbers. I have also used all the AA charges for Rosa and Serah at this initial stage.
• There is no tank in this team so destroying the Defense Node first is not a good idea as that will give CPU more dangerous HP attacks (If you have a tank: WoL, Celes, Basch etc. then it might be okay to destroy the Defense Node first and let the tank absorbs the HP attacks from CPU). So I took out the Attack Node first, and the Defense Node shortly after to stop it from healing CPU (for my run this happened during summon, on Turn 34). Despite the enemy description, I noticed that sometimes even when I destroyed the Attack Node first and the Defense Node later, the CPU on its next turn can still use Concentrated Laser which usually one-shots a party member if it breaks (even in this video on Turn 37). Be careful with that and make sure the targeted member has high BRV.