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Path of Exile 2: Delirium Guide – Fog Mechanics, Passives, & Rewards

by Hazel Feb 02,2025

Path of Exile 2's Atlas Endgame: A Comprehensive Guide to Delirium

Path of Exile 2 (PoE 2) features four major endgame map encounters: Rituals, Breaches, Expeditions, and Delirium. This guide focuses on Delirium, a returning mechanic from previous PoE leagues, detailing its initiation, mechanics, rewards, and the associated Simulacrum Pinnacle event.

Understanding the Delirium Fog Mechanic

Delirium Mirror Icon

On the Atlas, map nodes offering guaranteed Delirium events are marked with a distinctive white and black icon resembling the Delirium Mirror. You can guarantee a Delirium event by placing a Delirium Precursor Tablet in a Lost Tower.

Within a Delirium map, locate the multi-colored, shattered-glass Delirium Mirror near your spawn. Activating it unleashes a swirling circle of Delirium Fog. This fog expands, increasing enemy difficulty. Leaving the fog ends the encounter.

Enemies within the fog are enhanced and drop unique rewards: Distilled Emotions (used in crafting) and Simulacrum Splinters (for summoning the Pinnacle Boss). Fractured Mirrors within the fog spawn additional waves of enemies and loot. Be wary of Kosis and Omniphobia, full-fledged bosses that can appear randomly.

The Simulacrum Pinnacle Event

Each endgame event offers Pinnacle Boss summoning items. High-tier Waystones in Delirium yield Simulacrum Splinters. Accumulate 300 splinters to create a Simulacrum, placing it in the Realmgate to access the 15-wave Simulacrum event. Difficulty escalates with each wave, increasing the chance of encountering Delirium bosses. Completion grants two Delirium Passive Skill points.

The Delirium Passive Skill Tree

Delirium Passive Skill Tree

The Delirium Passive Skill Tree, located within the Atlas Passive Skill Tree (top-right), modifies Delirium events. It features eight Notable nodes and eight nodes increasing Simulacrum difficulty. Each Simulacrum completion rewards two passive points, necessitating increased difficulty with each new Notable node.

Notable Delirium Passive Nodes:

Notable Delirium Passive	Effect	Requirements
Get Out Of My Head!	Waystones have a 20% chance to have an Instilled Emotion effect.	N/A
Would You Like To See My Face?	Doubles fog difficulty scaling, but also doubles Splinter stack size.	Get Out Of My Head!
You Can't Just Wake Up From This One	Delirium Fog dissipates 30% slower.	N/A
I'm Not Afraid Of You!	Delirium Bosses have 50% increased Life, but drop 50% more Splinters.	You Can't Just Wake Up From This One
They're Coming To Get You...	Unique Bosses spawn 25% more often; slaying Rares pauses fog dissipation.	N/A
Isn't It Tempting?	30% chance for an extra reward, but Delirium Demons deal 30% increased damage.	N/A
The Mirrors... The Mirrors!	Delirium Fog spawns Fractured Mirrors twice as often.	N/A
It's Not Real, It's Not Real!	Delirium enemies drop 50% more reward progress, but fog dissipates 50% faster.	N/A

Prioritize "You Can't Just Wake Up From This One," "Get Out Of My Head!," and "They're Coming To Get You" for optimal reward increases without significant drawbacks.

Delirium Rewards

Distilled Emotions

Delirium enemies and bosses drop Distilled Emotions, used to Anoint amulets with Notable Passive Skills or add guaranteed modifiers to Waystones.

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