I'm 6 for 7 on Apocalypse Ragnarok, and 7/7 on Phoenix. I tried several setups on Apocalypse, but I ended up using my typical water team:
- Andromeda (heals, defense up for overdrives, Resurrect) with Black Propaganda equipped (+1 to overdrive meter)
- Belphegor (Massive rage meter reduction, type B atk/def debuff)
- Triton (ATK down and combo attack down, self-heal = good frontline tank)
- Shiva (spike DPS to end Rage quickly)
- Sol (heals, attack down, clear Blind)
- Eidolons: Character ATK up 40%/HP up 20%, Behemoth 45% (massive damage boost to a combo water/light team, second Blind removal)
I let Apocalypse use her first overdrive, clear the debuff, use Black Propaganda, then push into Rage. I partial Burst to end Rage before her 2nd overdrive. Once she uses her 2nd overdrive, I let Black Propaganda expire, reapply debuffs, and repeat. If no characters die, I Full Burst during Rage and that usually takes her to low HP. If 1 character dies, I should still be able to push her out of rage before the 4th overdrive for an easy victory. If two characters die, the battle gets interesting and I might have to eat a Rage overdrive.
I've found that the keys to this fight are:
- Black Propaganda
- Damage mitigation with high levels of ATK DWN (ideally -50%) combined with strong healing (~550 per turn)
- Sufficient burst gauge reduction / spike DPS to end Rage in 3 turns or less without a full Burst, as needed
- 2 sources of Blind removal (which can kill your burst gauge generation and get you stuck in Rage)
The one time I lost was when I brought Gaia along to mitigate overdrive damage, but then mistimed her damage reduction ability and ended up eating an unmitigated normal overdrive out of stun. After that, I decided that stacking ATK DWN to -50% with combo attack down was a more reliable way of mitigating damage.