Diablo 4 Season 11 Secret Portal Guide

Diablo 4 Season 11 introduced one of the most exciting hidden features the game has ever seen — a secret portal that allows players to fight all four Uber Lesser Evils in a single encounter. This endgame challenge is not only mechanically intense but also rewards players with some of the most valuable and exclusive loot of the D4 season 11.

However, unlocking this portal is no easy task. It requires significant grinding, precise knowledge of boss mechanics, and a full understanding of where and how to obtain the required items.

This guide walks you through every step, from farming the purified trophies to activating the altars and claiming the final rewards.

What Is the Secret Portal in Diablo 4 Season 11?

The Secret Portal is a hidden open-world mechanic that becomes available once players collect and offer four Purified Lesser Evil consumables at their respective altars. Once activated, a red portal appears, leading to a unique arena where you fight Uber versions of all four Lesser Evils.

These Uber bosses are stronger, tankier, and far more dangerous than their standard counterparts, making this content best suited for Torment IV endgame players.

Step 1: Collect All 4 Purified Lesser Evil Consumables

To unlock the Secret Portal, you must first obtain one purified item from each Lesser Evil.

Required Purified Items & How to Get Them

Drop Rate Reality Check

• Drop rates are extremely low
• Some players report 60–70+ Andariel Tribute runs
• This grind often spans dozens of Paragon levels
• There are unconfirmed reports of drops from Bartuc in Infernal Hordes, but no verified proof yet

This step alone represents the majority of the grind.

Step 2: Activate the 4 Lesser Evil Altars (Open World)

Once all four purified items are collected, they must be offered at their corresponding altars in the open world.
Activation order does not matter.

Azmodan – Altar of Sin

• • Region: Hawezar

  • Waypoint: Ruins of Rakhat Keep – Inner Court

  • Location: West toward Umir Plateau

  • Offer: Purified Tongue of Azmodan

  • Activation sign: Altar ignites with fire

Belial – Altar of Lies

• • Region: Fractured Peaks

  • Waypoint: Bear Tribe Refuge

  • Location: East to Malthus’ Perch

  • Offer: Purified Eye of Belial

  • Activation sign: Extra eyes appear

Duriel – Altar of Pain

• • Waypoint: Denshar

  • Location: Northwest into Southern Expanse

  • Offer: Purified Horn of Duriel

  • Activation sign: Altar activates

Andariel – Altar of Anguish

• • Region: Nahantu

  • Waypoint: Kurast Docks

  • Location: Southwest to Nether Valley

  • Offer: Purified Claw of Andariel

  • Activation sign: Altar activates
    
    

Step 3: Enter the Secret Portal & Boss Fight Mechanics

After all four altars are active, a red portal marked with question marks appears.

Inside, players face all four Lesser Evils in paired Uber encounters:

Boss Fight Order

1. Andariel + Belial
2. Duriel + Azmodan

These Uber versions:

• Have significantly more HP
• Deal increased damage
• Are designed for Torment IV

Tip: Focus Duriel first in the second phase, as he has lower health. Once Duriel is down, unload everything on Azmodan.

Step 4: Rewards – Hoard of Damnation

Defeating Azmodan spawns a chest called Hoard of Damnation.

Guaranteed Rewards

• Resplendent Spark

• Boss-specific consumables

• 1 Unique from each Lesser Evil’s loot table

• Runes

• Tributes

• Mount Trophy Cosmetic: Shield Crest of Exile

  • Skull and jaw-themed mount decoration

Important Limitation: Once Per Account

This Secret Portal can only be completed once per account per season.

• Re-entering the portal:

  • No additional Resplendent Spark

  • No duplicate main rewards

Final Thoughts

The Diablo 4 Season 11 Secret Portal adds something the game has long needed — a hidden, high-effort endgame goal with real rewards. While patience is required, the experience and loot make it one of the most satisfying challenges of the season.

If you’re already deep into Torment IV, this should be at the top of your Season 11 checklist.