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

Author:Kristen Update:Jan 25,2025

Path of Exile 2: A Comprehensive Guide to Delirium Endgame Events

Path of Exile 2 features four major endgame events on the Atlas map: Rituals, Breaches, Expeditions, and Delirium. This guide focuses on Delirium, a returning mechanic from previous Path of Exile leagues, detailing how to initiate events, navigate the mechanics, and maximize rewards.

Understanding the Delirium Fog Mechanic

Atlas map nodes with 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 Delirium Mirror near your spawn point. Activating it unleashes a circle of Delirium Fog. This fog expands, increasing enemy difficulty. Leaving the fog ends the event.

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 mobs and loot. Be wary of Kosis and Omniphobia, full-fledged bosses that can appear randomly.

The Simulacrum Pinnacle Event

High-tier Waystones yield Simulacrum Splinters. Accumulate 300 splinters to create a Simulacrum, which you place in the Realmgate. This initiates a 15-wave challenge with increasing difficulty and a higher chance of encountering Delirium bosses. Completion grants two Delirium Passive Skill points.

The Delirium Passive Skill Tree

Located on the Atlas Passive Skill tree (top-right), the Delirium Passive Skill Tree modifies Delirium events. It features eight Notable nodes and eight nodes increasing Simulacrum difficulty. Each new Notable node requires completing a Simulacrum at increased difficulty.

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? Delirium Fog doubles difficulty scaling but also doubles Splinter stacks. 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; 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! 50% more reward progress; Delirium 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 Event Rewards

Delirium Fog-affected enemies drop Distilled Emotions. Bosses also frequently drop them. These currencies anoint amulets with Notable Passive Skills, eliminating the need to spend passive skill points.

Distilled Ire Distilled Guilt Distilled Greed Distilled Paranoia Distilled Envy Distilled Disgust Distilled Despair Distilled Fear Distilled Suffering Distilled Isolation

Distilled Emotions also add guaranteed modifiers to Waystones, increasing mob density and power within the Delirium Fog. Simulacrum Splinters, also dropped by enemies, combine to create a Simulacrum, leading to a unique 15-wave event with guaranteed unique equipment rewards.