[K]

The only tactic that I've found to be effective is using Flaming Arrows in every combat and keeping a few Fever Fetishes with your army.

Every other possible tactic tends to end in failure for this nation. They seem designed for SCing, but even when you finally get them casting Soul Vortex they tend to not last that long.

Their low armor on all their troops tends to mean that you either race to Wooden Warriors and just live with the fact that you can't fight without mages or you end up dead very fast. Unlike other nations with low armor, you don't have Bless troops that can be juiced up help you survive until WW/MP or one of the "Army of" spells..

On the plus side, Hannya are recruitable anywhere and with Phoenix Power they can spam Falling Fires.

I also tend to do a lot of item crafting with them for things like those Incinerate rods, the banners that cast Drain Life, and standards(since you don't have a good morale solution without H2s or beserkers). Low research on your Oni and being a death power means that you are required to make Skull Mentors.