Beginning in Season 2 of Diablo 4, gamers got to fight the Echo of Duriel as a new endgame boss. This boss drops a unique mount and some of the game's most powerful items - Mythic Uniques - but isn't easy to summon or defeat.

First, players must collect several rare materials to unlock the fight with this boss. Then, placing the materials on a specific altar will begin one of the game's most difficult boss fights, as Duriel spawns at a level of either 100 or 200, depending on whether the spawn was Tormented. Coming prepared for this encounter is key to avoiding wasting materials.

Updated by Abigail Angell on 2nd of September, 2024: Season 5 has brought several changes to Diablo 4's endgame, including changes to farming locations for endgame boss materials and Unique Items. Most notably for Duriel, the drop rate of Mythic Uniques has been changed drastically from 1.5% to 7.5%, as well as removing the monopoly Duriel had on dropping the best loot.

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How to Summon Echo of Duriel in Diablo 4

Shards of Agony in Diablo 4

To summon one of Diablo 4's toughest endgame bosses, Echo of Duriel, players will have to collect 2 different types of materials for a normal spawn, and 3 for a Tormented Duriel Spawn.

For a normal Duriel spawn, players need:

  • 2 Mucus-Slick Eggs
  • 2 Shards of Agony

In contrast, the Tormented Duriel spawn requires much more. In this case, players will need:

Once players have the materials to summon Duriel, they should head to the Gaping Crevasse in Gea Kul. There, players will find an altar where the materials can be sacrificed to summon Duriel.

How To Farm Mucus-Slick Eggs

Players can get Mucus-Slick Eggs by killing Echo of Varshan in World Tier 4. The egg is not a guaranteed drop, so several spawns might be necessary. In addition, only the summoner in a party of players has the chance to drop an egg.

How To Farm Shards of Agony

Shards of Agony are a rare drop from the boss Grigoire, The Galvanic Saint. Similar to fighting the Echo of Varshan, players should expect to need several spawns before getting the materials they desire.

Duriel is a max-level boss that deals mostly Poison Damage. If players have trouble clearing the fight, they should ensure that their Poison Resistance is capped, and that they have all Paragon Points unlocked with upgraded Glyphs.

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Echo of Duriel Rewards in Diablo 4

Diablo 4: Lilith

For defeating the Echo of Duriel boss, players will receive both Unique and Mythic Unique items. As with most Boss Loot Tables, the chances for rarer items are slim - with only a 7.5% chance of a Mythic Unique dropping each time Duriel is killed.

Class Unique Mythic Unique
Barbarian
  • Azurewrath
  • Tuskhelm of Joritz the Mighty
Druid
  • Ahavarion, Spear of Lycander
Necromancer
  • Doombringer
  • The Grandfather
Rogue
  • Doombringer
Sorcerer
  • Flamescar
  • Blue Rose
  • Ahavarion, Spear of Lycander
All Classes
Cosmetic Smoldering Brimstone Mount Smoldering Brimstone Mount

As of Season 5, Duriel is no longer the only boss to drop Mythic Uniques regularly. All Tormented bosses have the same drop rate for Mythic Uniques, although the standard versions retain their previous loot tables.

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Diablo 4 Tag Page Cover Art
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Action RPG
Hack and Slash
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Systems
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Top Critic Avg: 88 /100 Critics Rec: 93%
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Released
June 5, 2023
ESRB
Mature 17+ / Blood and Gore, Intense Violence, Language, In-Game Purchases, Users Interact
Developer(s)
Blizzard
Publisher(s)
Blizzard
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WHERE TO PLAY

SUBSCRIPTION
DIGITAL
Checkbox: control the expandable behavior of the extra info

Engine
Proprietary Engine
Multiplayer
Online Multiplayer, Online Co-Op, Local Co-Op
Cross-Platform Play
All platforms
Cross Save
All platforms
Franchise
Diablo
Number of Players
1-2 players
Steam Deck Compatibility
Verified
Genre(s)
Action RPG, Hack and Slash
How Long To Beat
26 Hours
PS Plus Availability
N/A
File Size Xbox Series
158.25 GB
Local Co-Op Support
1-2 players (console only)