Aeon Battle (Apocalypse +)
(1 STAM)
Boss HP Weak Absorb Status Vuln. Break Resist
Valefor 134,831 None None None All
Ifrit 184,911 Ice1 Fire None All
Ixion 281,219 Water1 Lightning None All
Note 1: Slight weakness (50% additional damage)
Target Scores:
Lower Valefor's Magic.
Exploit Ifrit's weakness to ice attacks.
Exploit Ixion's weakness to water attacks.
Note(s):
For those who have been on autopilot for the last few U++, Apocalypse + (at least for this and the upcoming FF IV event), are pretty difficult and they will do hefty amount of damage to your party. You'll face each Aeon individually, and as soon as you defeat one, the next will spawn.
Valefor likes to slow your party. He has a ST attack which carries with it a 102% chance to slow (this one can be tauntilated), and once he is dropped below 50%, he will use his Ultimate Sonic Wings, which is AoE with a 102% chance to slow. You'll either want Slow Resist Accessories and/or Affliction Break, or simply just wait to cast your Hastega until he is below 50% and uses the ability.
Valefor uses mixed attacks, and has AoE magic/physical attacks, so both suites of mitigation are recommended.
On Ifrit's first turn after spawning, he will use his Ultimate Hellfire attack (AoE piercing fire magic damage), so make sure you aren't in critical HP when you defeat Valefor. Ifrit does use mixed attacks, but all of his AoE's are magic-based.
Ifrit does use his Ultimate Hellfire attack every 5 turns, so try to defeat him as quickly as possible.
The worst of the three, Ixion, spawns after Ifrit is defeated. Ixion will use his Ultimate Aero Spark attack on his first turn, which deals ranged physical damage, regular dispels your entire party, and has a 33% chance to Stop. He will use it again when he enters his very weak phase at 40% HP, and will use it every 7 turns from the last time he used it. To make matters worse, he'll also use his ST Aero Spark, which also carries with it a dispel.
You need to keep your buffs up as much as possible here - if you let Wall expire and get hit with an Ultimate Aero Spark with no protect, you'll be taking close to 5K damage to everyone, which has a very high chance of wiping your party. Ixion will also use AoE magic attacks, as well as his Ultimate Thor's Hammer, which deals piercing magic lightning damage.
Ixion is a beast - keep as many SB gauges reserved as possible and try to end the fight quickly before you get overwhelmed with the dispels and damage.
As far as accessories, while you may want to equip slow resist, lightning resist would probably be best to help mitigate Ixion's attacks.