For example, a first dungeon with Diablo IV Gold Volcanic and Drifting Shade affixes becomes increasingly unmanageable when Stormbane’s Wrath and Resource Burn are added later. By the third dungeon, you might be dodging explosions, evading lethal orbs, struggling to maintain resources, and dealing with massive enemy health pools — all simultaneously.

The best builds for this challenge aren’t just about raw damage. You’ll need:

Mobility to reposition quickly

Crowd control resistance

Survivability tools like damage reduction and life regen

Cooldown management to maximize burst damage and healing windows

Your build's ability to adapt mid-fight will often determine whether you survive or perish.
Final Challenge: Exalted Astaroth and the Amalgam

Complete all three dungeons, and you’ll unlock the climactic battle — a remixed version of the Astaroth encounter from the campaign. Only this time, he’s not alone.

Exalted Astaroth is joined by the Amalgam, his demonic mount, now a standalone boss.

The two fight together, each with their own mechanics, health bars, and attack patterns.

If you defeat the Amalgam first, Astaroth revives it after a delay.

If you slay Astaroth first, the Amalgam becomes enraged and continues the fight solo.

This boss design creates a high-stakes puzzle. Players must decide who to focus on and when, managing phase transitions and syncing ultimate abilities to cheap Diablo 4 Items avoid being overwhelmed. Their abilities combine deadly AoE attacks, burst damage, and debilitating crowd control — perfect execution is essential.