User blog comment:Linathan/Squad Spotlight & Guide: Trial X3/@comment-26467509-20150903173147

Finally after so many tries RNG was in my favor and I beat her! I will say though on the third Fei it's almost safer to kill him fast and tank the Demonic Atrocity/Depraved Punishment instead of trying to manage Fei's life during the Bozdell/Shield phase to cancel Depraved Punishment. There's too much risk managing Fei's life during this phase and I usually lost track of when she'd do Malignant Wave/Blight Harvest spams. Just my two cents. Once you tank the final Depraved Punishment you can wittle at her life and guard until you recuperate and reach her 10% leadership cancel phase.

One Squad Cleared:

Deimos Thunderborn (lead) (40% HP boost kept the team alive, nulified status ailment, and being able to guard and still get BC was a huge plus)

Neptunian Tridon (BB saved me when DoT was in affect)

Leviathan Sage Elimo (MVP - Mitigate, heal, and debuff remover)

Glacier Twin-Blade Colt (Strong attack and good life)

Valkyrie Archangel Griel (Strong against Fei)

Obsidian Seraph Zenia (Friend)

No revives and two Fujin's.

Started the battle off guarding then tank/spank until the first Fei. Killed him on the second turn of the shield so she wouldn't use Depraved Punishment. Used Tridon's BB the turn before Demonic Atrocity to cancel out the DoT and used Zenia's UBB on Soul Siphon phase. Repeat this with the second Fei. Third Fei I was almost wiped trying to get him to the Bozdell phase so I just killed him off, recovered and waited for the Demonic Atrocity DoT to end and pushed her into the shield phase. Guarded on the third turn of the shield, recovered and waited for my leadership skills to activate again, and killed her off.

Just going to note that Elimo healed EVERY turn except on the last Depraved Punishment where I made her guard. Mitigation is so important on this trial. Also would use her BB when the Deimos' leadership skill went down and someone got cursed/poisoned.

HUGE NOTE: Don't push Xie'Jing from her Soul Siphon Stage straight into her shield phase. I made this mistake a few times, caused me to lose count and have to try and rush kill Fei which led to mistakes, at least for me. And if you DON'T manage to kill Fei if this happens, you're in for a world of hurt.

Other than this, it's kinda all up to the RNG gods.