| Did you pick up any crystals wards of fire from the temple in Arindale? That will make things a lot easier. If not, try running around instead of staying in one place and fighting. That way the wizard's fireballs will do a lot of the work for you. Step on the platforms if another spirit is about to appear, then keep running. And drink potions like water.
Dispel undead works, so the spirits must not be undead. |