Delirium

• Unique Rewards: Distilled Ire, Distilled Guilt, Distilled Disgust, Distilled Greed, Simulacrum Splinter, Delirium Precursor Tablet
• Pinnacle Boss: Simulacrum Encounter

Some maps have been touched by insanity. A mysterious entity has taken special interest in you.

Step through the looking glass and you will find your nightmares coming to life. When you touch the mirror, the mists of Delirium will spread out across the area, infecting your mind.

You must stay within the mist to maintain the nightmare, which is as profitable as it is terrifying. Everything you kill will increase the rewards that drop.

However, the deeper into the mist you travel, the stronger the monsters are. Be careful not to overstay your welcome.

Rare and unique enemies will become vessels for terrifying demons who will manifest out of them to unleash powerful attacks on you.

Distilled Emotions (Oil)

The mist also offers a strange crafting material: Distilled Emotions. By combining these emotions, you are able to instill your amulet with a notable from the passive skill tree. This is like gaining an extra passive point for free attached to your gear.

They are also particularly great because you don't have to traverse the tree to get to them, allowing you to get off class bonuses that would normally be much harder to get.

Distilled Emotions can also be used to instill your endgame maps, applying “Delirious” to them and adding additional difficulty and rewards, allowing you to further juice your endgame maps.

Delirium Tablets

The tablets you can find for Delirium can be used to further improve them: increase pack size, make the fog dissipate slower, or improve your progress towards the pinnacle encounter of Delirium.

Simulacrum splinters

Speaking of which, every now and then you will find Simulacrum splinters. The mysterious entity will create strange encounters based on warped versions of your own memories.

Monsters in Simulacrums come in waves that get progressively more difficult.

You'll receive loot at the end of each wave, and you'll have to make the decision to leave now or continue on, facing up against even tougher foes from the mist.

The bosses you will face as you get deeper into the Simulacrum are truly terrifying. Still sane, Exile? If you can complete a Simulacrum, you'll gain points for the Delirium section of the Atlas skill tree.