Ruler of the Outer Worlds Done in

MATERIA SETUP AT THE END OF THE VIDEO AND IN DESCRIPTION
Rulers of the Outer Worlds done in 5:29
An extremely easy build that should work for all brutal combat challenges, materia set up heavily inspired by a Reddit post that will be linked at the bottom. My materia set up was as follows
Aerith
Gambenteinn
MP Absorb = Fire | ATB Boost | HP Up | First Strike | Magic Up
Cetran Armlet
Elemental = Fire | Swiftcast = Fire and Ice | Magic Efficiency = Fire | Magic Focus = Fire
Summon - Phoenix
Accessory - Enhanced Psychic's Charm
Weapon Skills - Reprive/Mp+3/mAtk+20/ATB charge rate up
Yuffie
Crescent Sickle
Speed Up | Enemy Skill | Magnify = Barrier | First Strike | Revival
Cetran Bracer
Precision Defense | ATB Assist | ATB Boost | Healing | Elemental = Fire | HP Up | Mp Up
Summon - Gilgamesh
Accessory - Speed Demon Keychain
Weapon Skills - atk+20/atk+20/opening ATB bonus/ ATB charge rate up
Barret
Battle Cry
Magnify = Time | Magnify = Barrier | Prayer | Revival
Valkyrian Bangle
Assess | Fire | Elemental = Fire | Hp Up | Mp Up |Summon - Kujata
Accessory - Chocoking's Cape
Weapon Skills - atk+20/opening ATB bonus/ATB charge rate up/weapon ability ATB recovery
Set up your party as Aerith/Yuffie/Barret as I’ve noticed starting as Yuffie can cause problems with the aggro, for rounds 1-3 you want to immediately swap to Yuffie and draw aggro away from Barret and Aerith. Have Barret cast haste and Aerith throw down an ATB ward. Run over to the atb ward and spam brumal form over and over. From there have Barret pop lifesaver and Aerith an arcane ward. After that just spam fire on Aerith and then pray with Barret for health when needed or use maximum fury otherwise. In rounds 4 & 5 use Aerith’s ATB boost for safety reasons. For sephiroth make sure you swap to Barret immediately so he gets grabbed by the chains and not Yuffie or Aerith.
Shoutout to / optimized_yuffie_aerit... for giving me the general idea/layout for this build