The fight just has a lot of RNG. The most important things are communicating when stuff need to be adjusted, like shriek positioning.
Having not cleared it myself I can't give advice with too much authority, but for the fireballs, just make sure you run out as soon as you see the ground flash for shriek. DPS seem to be able to scoot out of there before the fireball hits most of the time.
Having not cleared it myself I can't give advice with too much authority, but for the fireballs, just make sure you run out as soon as you see the ground flash for shriek. DPS seem to be able to scoot out of there before the fireball hits most of the time.