Diablo 4 Season 11 Lesser Evil Invasion Event | How to Farm Corrupted Essences to Unlock Rewards?
Category: Diablo 4 Posted: Jan 06, 2026 Views: 2052
Almost every Diablo 4 season that introduces exclusive seasonal mechanics features a seasonal event that connects other season-exclusive gameplay or mechanics. In Season 11, this event is Lesser Evil Invasion.
This event connects the four bosses in Season 11 that provide you with seasonal powers, Divine Gifts. You will encounter them in different in-game events and obtain Corrupted Essences drops by defeating them.
These essences can be submitted to Hadriel to unlock a pair of Divine Gifts corresponding to a specific boss, or used to open boss chests after completing certain events.
Therefore, we will provide you with a detailed explanation of the entire process of participating in this event and the methods and techniques for defeating the four bosses.

Completing the prerequisites
To smoothly experience all of Season 11's content, you need to complete or skip the main story campaign and then complete the prerequisite seasonal quest, Divine Missive.
This quest is essentially just a guide to Season 11 experience, so it's easy to complete. First, travel to the southwest of Kyovashad and find College of Light in Fractured Peaks region.
There, you will find Hadriel, the key NPC for this season, waiting for you at Heavenly Forge. Interact with him and trigger the dialogue; the quest will be completed, marking the official start of the seasonal gameplay.
It's important to note that defeating bosses and submitting Corrupted Essences is also done through Hadriel, and unlocking all Divine Gifts based on this constitutes another seasonal quest: Hadriel's Divine Missive.
Defeating World Boss Azmodan
Azmodan is both a new world boss in Season 11 and one source of Corrupted Essences, specifically Corrupted Tongue of Azmodan. Unlike other Lesser Evils, his essence is not a direct drop; you need to open hoard chests to obtain it.
You can choose to encounter Azmodan according to the world boss rotation, or travel south of Zarbinzet, find three altars, and use one of them to summon him.
Each altar represents one of the other three Lesser Evils. Whichever altar you use to summon Azmodan, that boss will gain some of the power of the demon represented by that altar.
More importantly, after completing this form of Azmodan boss fight, the dropped hoard chests also require consuming the corresponding Lesser Evil's Corrupted Essences to unlock them.
Therefore, to achieve higher farming efficiency for rewards, we recommend that you prioritize completing enough other Lesser Evil boss fights before fighting Azmodan through summoning.
It's important to note that you can only hold a maximum of 20 Corrupted Essences from all Lesser Evils at any given time. To avoid being unable to pick up loot, it's best to exchange them for other rewards or Divine Gifts promptly.
Defeating Belial in The Pit
Corrupted Essence dropped by this boss is Corrupted Eye of Belial. His presence means you will encounter many green eyes during your challenge in The Pit; only by destroying enough eyes will Belial replace the normal boss.
Generally, if Belial appears and is defeated, at least one Corrupted Eye of Belial will drop. If you want to ensure your safety while increasing the number of drops in a single run, you can team up with friends to enter The Pit.
Defeating Duriel in Helltides
To obtain Corrupted Horn of Duriel drop, you first need to clear enough enemies in Helltides to increase your threat level until the limited monster Pangs of Duriel appears.
Killing these enemies has a chance of dropping Baneful Hearts, or you can obtain them by collecting enough Aberrant Cinders to open chests. Then, you need to find Pained Altar and consume two Baneful Hearts to summon Duriel.
The boss's combat mechanics are no different from when he only appears as a lair boss, so the difficulty in obtaining the relevant Corrupted Essence mainly lies in the low drop rate of Baneful Hearts. Therefore, we still recommend completing this in a group.
Defeating Andariel in Kurast Undercity
To unlock this boss fight, the primary prerequisite is that you need to own Vessel of Hatred expansion. Her appearance is more likely when you complete most of the events within the dungeon to reach the highest Attunement progress.
Andariel is not only difficult to deal with, but her power also affects the entire dungeon before she appears, making your exploration more dangerous. The essence she ultimately drops is Corrupted Claw of Andariel.
What are the rewards for completing the event?
All types of Corrupted Essence can be exchanged with Hadriel for corresponding Divine Gifts, which are:
- Azmodan: Essence of Sin, Essence of Hellfire
- Belial: Essence of Lies, Essence of Shadows
- Duriel: Essence of Pain, Essence of Squalor
- Andariel: Essence of Anguish, Essence of Screams
Each essence provides different buffs, and you can choose the one that suits your needs.
Additionally, Corrupted Essence dropped by bosses can be used to open the hoard chests that drop separately after Azmodan's death, which makes Corrupted Tongue of Azmodan even more valuable.
Additional tips
An interesting little fact is that as the name suggests, Corrupted Essence dropped by each Lesser Evil is actually a part of their body.
More importantly, if you want to obtain the lair hoards that appear after the death of Lesser Evils other than Azmodan, you need to prepare the corresponding keys beforehand to open them.
That's all the information in this guide. We hope you can unlock your desired Divine Gifts soon and complete all the seasonal tasks in Season 11 while enhancing your character!
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