Fortunately, neither Shaer nor William could sense Hill's silent complaints... so Agleya remained peaceful.
The Undead Tribe, blocked by the powerful defensive barrier, was not in a hurry. They would never become anxious because of a temporary setback in battle.
In the world of the Undead Tribe, clearing the field before facing a boss is just routine! Before clearing the field, you might even have to complete some tasks, or search for traps and mechanisms. Making a wrong move and having to retreat is something everyone is accustomed to.
Hence, the Undead Tribe's battles always have a mysterious calmness. You do your thing, and I do mine... as long as I don't die, you are the one who will surely die.
So even though the Dilo Dwarves elders kept contacting the divine artifact hidden at the bottom of the volcano to replenish the defensive shield, the Undead Tribe simply started using various spells... especially the arrows that flew everywhere without ceasing.