PoE Delirium Boss Guide

PoE Delirium Boss: (Kosis, The Revelation), (Omniphobia, Fear Manifest). Using Simulacrum Simulacrum to open the boss fighting area. Sometimes the player can also encounter the boss in maps affected by the Delirium mist.

Location: Lunacy’s Watch, The Bridge Enraptured, The Syndrome Encampment, Hysteriagate or Oriath Delusion.

Defeat a Unique Delirium Boss

Delusions of Persecution Atlas Passive Tree

Count Name Category Description
1 Delusions of Persecution Notable
  • Delirium Encounters in your Maps are 100% more likely to spawn Unique Bosses
  • Delirium Bosses in your Maps drop 50% increased Simulacrum Splinters
  • Delirium Bosses in your Maps have 50% increased chance to drop Unique Cluster Jewels

1. How to spawn PoE Delirium Boss

Kirac Map Mods: Delirium. Area contains a Mirror of Delirium.

  • Simulacrum Simulacrum

Simulacrum Simulacrum is a map fragment. Using a Simulacrum Simulacrum will open 6 portals to Lunacy’s Watch, The Bridge Enraptured, The Syndrome Encampment, Hysteriagate or Oriath Delusion. In these areas, you will fight delirium boss.

How to get Simulacrum

  • Combine 300 Simulacrum Splinter Simulacrum Splinter to create a Simulacrum Simulacrum.

2. Fight Final Delirium Boss Strategy

The arena is based on one of the town zones, which include Lioneye’s Watch (Act 6), The Bridge Encampment (Act 7), The Sarn Encampment (Act 8), Highgate (Act 4/9), or Oriath Docks (Act 10).

There are a total of 20 waves of enemies to defeat. Interacting with the Strangely Familiar Entity will summon the wave. Each wave increases the difficulty and rewards. Higher waves add additional monster modifiers and increases the level of Delirium. Once the entire wave of enemies is cleared, it will drop all the loot listed. A Stash is available in the zone, allowing you to transfer items between waves. Starting a new wave will destroy all items on the ground.

The Delirium bosses : Omniphobia, Fear Manifest can start spawning at wave 10 and is guaranteed to spawn at wave 15 if he doesn’t spawn before, while Kosis, The Revelation can start spawning at wave 15 and is guaranteed to spawn at wave 20 if he doesn’t spawn before. Delirium Bosses have increased chance to spawn starting at wave 18 and can spawn several times per Simulacrum Simulacrum.

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3. Kirac Map Mods

Name Kirac’s league modifiers Cost
Delirium Area contains a Mirror of Delirium. 7 Chaos Orbs

List of PoE Delirium Scarabs

Name DescriptionLimit
Delirium Scarab
  • Area contains a Mirror of Delirium
 Limit: 1
Delirium Scarab of Mania
  • Delirium Reward Meters fill 100% faster in Area
 Limit: 2
Delirium Scarab of Paranoia
  • Delirium Encounters in Area generate 2 additional Reward types
 Limit: 2
Delirium Scarab of Neuroses
  • Delirium Encounters in Area contain all Unique Delirium Bosses
  • Can only be used with Tier 11+ Maps
 Limit: 1
Delirium Scarab of Delusions
  • Maps found in Area have layers of Delirium
 Limit: 1

Delirium Atlas Passive Tree

Count Name Category Description
3 Additional Delirium Reward Chance Normal
  • Delirium Encounters in your Maps have 4% chance to generate an additional Reward type
3 Delirium Boss Chance Normal
  • Delirium Encounters in your Maps are 16% more likely to spawn Unique Bosses
8 Delirium Chance Normal
  • Your Maps have +8% chance to contain a Mirror of Delirium
1 Delirious Map Chance Normal
  • Maps found in your Maps have 1% chance to have layers of Delirium
1 Pathological Notable
  • Maps found in your Maps have 3% chance to have layers of Delirium
1 Delirium Boss Chance and Additional Delirium Reward Chance Normal
  • Delirium Encounters in your Maps are 8% more likely to spawn Unique Bosses
  • Delirium Encounters in your Maps have 2% chance to generate an additional Reward type
1 Compulsive Hoarder Notable
  • Delirium Encounters in your Maps have 8% chance to generate three additional Reward types
1 Delusions of Persecution Notable
  • Delirium Encounters in your Maps are 100% more likely to spawn Unique Bosses
  • Delirium Bosses in your Maps drop 50% increased Simulacrum Splinters
  • Delirium Bosses in your Maps have 50% increased chance to drop Unique Cluster Jewels

Delirium Atlas Passive Tree

Count Name Category Description
2 Delirium Fog Dissipation Delay Normal
  • Delirium Fog in your Maps lasts 3 additional seconds before dissipating
2 Delirium Persistence Normal
  • Delirium Fog in your Maps dissipates 8% slower
1 Descent Into Madness Notable
  • Delirium in your Maps increases 50% faster with distance from the mirror
1 The Singular Eternity Notable
  • Delirium Fog in your Maps dissipates 25% slower
  • Delirium Fog in your Maps lasts 10 additional seconds before dissipating
2 Delirium Difficulty Normal
  • Delirium in your Maps increases 10% faster with distance from the mirror
1 Unending Nightmare Keystone
  • Delirium Fog in your Maps never dissipates Simulacrum Splinters cannot be found in your Maps Delirium Orbs cannot be found in your Maps

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Delirium Atlas Passive Tree

Count Name Category Description
1 That Which You Seek Notable
  • Your Maps have +24% chance to contain a Mirror of Delirium

Delirium Atlas Passive Tree

Count Name Category Description
1 Paranoid Fixation Notable
  • Delirious Unique Monsters in your Maps have a 2% chance to drop an additional Cluster Jewel
  • Delirious Unique Monsters in your Maps have a 1% chance to drop an additional Delirium Orb
2 Cluster Jewel Chance Normal
  • Delirium Monsters in your Maps have 10% increased chance to drop Cluster Jewels
1 Delirium Orb Reward Chance and Cluster Jewel Chance Normal
  • Delirium Rewards in your Maps have 5% increased chance to give Delirium Orbs
  • Delirium Monsters in your Maps have 5% increased chance to drop Cluster Jewels
2 Delirium Orb Reward Chance Normal
  • Delirium Rewards in your Maps have 10% increased chance to give Delirium Orbs

Delirium Atlas Passive Tree

Count Name Category Description
1 Imagined Pursuits Notable
  • Delirium Reward Types in your Maps gain +1 to count on Map Completion
1 Screaming Whispers Notable
  • 18% increased Stack size of Simulacrum Splinters found in your Maps
2 Delirium Reward Progress Normal
  • Delirious Monsters Killed in your Maps provide 10% increased Reward Progress
2 Delirium Additional Splinters Normal
  • 6% increased Stack size of Simulacrum Splinters found in your Maps
1 Delirium Reward Progress and Additional Splinters Normal
  • Delirious Monsters Killed in your Maps provide 5% increased Reward Progress
  • 3% increased Stack size of Simulacrum Splinters found in your Maps

4. Kosis, The Revelation

(Kosis, The Revelation) is one the two Delirium bosses.

Kosis, The Revelation

Resistance(s) 40% Cold Resistance
40% Fire Resistance
40% Lightning Resistance
25% Chaos Resistance
Modifier(s) Chaos Damage does not bypass Energy Shield
Cannot be fully Slowed
66% Less Curse Effectiveness

Mechanics Explained – Kosis, The Revelation

5. Omniphobia, Fear Manifest

(Omniphobia, Fear Manifest) is another Delirium boss.

Omniphobia, Fear Manifest

6. Complete Domination Encounters

Defeat each of the following targets while affected by the Covetous Shrine buff.

  • Delirium Boss

Kirac Map Mods: Domination. Area contains 4 additional Shrines.

All That Glitters is an Atlas passive: Shrines in Areas have 10% chance to be a Covetous Shrine.

Shrines Atlas Passive Skill

Count Name Description
1 All That Glitters
  • Shrines in your Maps have 10% chance to be a Covetous Shrine
3 Domination Shrine Chance
  • Your Maps have a 10% chance to contain an additional Shrine

Shrines Atlas Passive Skill

Count Name Description
1 Supplication
  • Your Maps contain an additional Shrine
3 Domination Shrine Duration
  • 25% increased Duration of Shrine Effects on Players in your Maps

Shrines Atlas Passive Skill

Count Name Description
1 Drawn to Power
  • Shrines in your Maps have 50% chance to be guarded by an additional Pack of Monsters
  • Shrines in your Maps are guarded by at least one Magic Pack
1 Syncretism
  • 30% increased Effect of Shrine Buffs on Players in your Maps
  • Shrines in your Maps grant a random additional Shrine Effect
2 Domination Shrine Chance
  • Your Maps have a 10% chance to contain an additional Shrine
1 Domination Shrine Effect
  • 20% increased Effect of Shrine Buffs on Players in your Maps

Complete Delirium Encounters

Complete each of the following Delirium encounters.

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