User blog:Nyonne/Barion's GGC - Guide For Volume 4

Some points

 * Karl and Liomerg hit a bit hard, but will be as hard as a kitten’s punch with their kitty paws once you put up the crit negate buff. Beware on Karl’s high count tho.
 * NO UBB IN SECOND STAGE except on the first turn
 * BB on hit is almost mandatory, since Barion also have Ares down at later game.

First Fight
Opponents : Karl & Liomerg

Just keep my point above in your mind and proceed carefully. Fujin your mitigator (and the unit who can negate crit for more safety) and faceroll until their HP reach 0. Try to finish the stage with everyone’s BB gauges are full btw.

Last Fight
Opponent : Barion

OD, fujin, and UBB Holia (or any OE units that can grant idol buff) on first turn (important!!!!!)

You can only use UBB ONCE in turn 1.

Turn 3 : Barion will use UBB. Make sure your mitigation is still on, and guard all for safety. Alternative, use Elimo’s S/BB to activate the barrier and guard all.

Turn 5 : Barion will nuke you. This time, you must GUARD ALL your units (make sure your mitigator used their skill on turn 4!!) to survive.

70% HP : Barion wipes your squad’s buffs. You can opt to guard all to fill your BB gauge (only applied if your leader/FL has BB on hit in their LS). Otherwise, pop a fujin to your mitigator and normal attack all to fill BB gauge.

50% HP : another UBB. Survivable with normal mitigation and barrier. ←  BB DRAIN EACH TURN STARTS HERE.  ↑ As I said above, Barion will start to drain the BB gauge of your unit with his ST attack. This is where Elza’s BB shines. Use her BB accordingly. Proceed carefully until Barion’s HP fell to 0 for the first time. Barion will revive with about 6% HP, and you only have exactly 1 turn to nuke him to death and claim your prizes!