Best/Foolproof Yiazmat strategy?

[RAWRmonger]

Average party level is around lv75, class ditribution is the "Lore Fiendly" from some famous googlesheet.
I got pretty much everything else done (except the trials) and I hava a Yagyu Darkblade.

[Pendergast891]

set up one person to buff/heal (will be your party leader) then have 2 others be berserked with high combo capabilities.

Bonus to having a bushi+shikari set up so you can have black robes while using yagyu.

It has a move called cyclone that it uses every 40 rounds so you can equip your characters with windbreakers when necessary.

With this set up you can melt yiazmat quickly

[Serafie1999AD]

Use Wither and Addle until Yiazmat's attacks do minimal damage. Keep casting Shell on everyone to reduce the chances of instant death attacks knocking out your characters. After that, the battle will be very hard to lose, and you'll just need to have patience to drain the millions of HP Yiazmat has.

[RAWRmonger]

Yiazmat is buried.

Yiazmat's mother is also a ♥♥♥♥♥. That bastard cast reflect on a character and it bounced off a Renew spell when I was 6 health pools away of finishing him. So the fight took 2x longer. But it wasn't hard.

Yeah I used Addle and Wither too, plus a beserked Yagyu holder. Never noticed the debuffs stayed on throughout the whole fight.

From reading stuff online, I was expecting death every other turn.

Guess it's the Mist Walker achievement, Bestiary (dunno what I'm missing) and then I'll tackle Trial Mode.