Guildhests

[Iscah]

I've never seen this one failed. The one I always see failed is the one where you have to land a killing blow on all of the enemies simultaneously, or they respawn with full HP, because it wants you to accomplish this at a level where tanks are still the only jobs that have AoEs that don't have drop-off damage past the first enemy hit.

I've seen the turtle hest failed only once in all the time I've been playing. It only happens if you've got a tank who won't listen and bring it where it needs to be.

As for Ward Up, "AOEs with drop-off damage" won't do anything to help you here. The intended solution is knowing there is a time to entirely stop doing AOE damage and wait until you can single-target the invincible one.

In any case, if the fight goes on long enough, they summon a bigger demon and you just kill that one.