Endwalker content

Eureka Orthos (Floors 81-90)

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See also: Eureka Orthos

Deep Dungeon.png

Eureka Orthos (Floors 81-90)

EO 81-90 Banner.png
Level
90 (Sync: 90)
Difficulty
Normal
Party size
Flexible
1-4 man 1-4 Any class frame icon.png
Unsyncing
Not Allowed
Time limit
60 minutes
Req. quest
Feature quest Rage Extinguished
Entrance
Mor Dhona (X:34.8, Y:19.2)
Patch
6.35

In the late Third Astral Era, when the ancient Allagan Empire was at the zenith of its glory, researchers toiled deep under the Crystal Tower to uncover secrets which might uplift their motherland to even greater heights. Their laboratory was dubbed Eureka Orthos, where impossible concepts of immortality, cloning, and dominion over the divine were made reality. So fantastic was this research that the legend of Eureka has endured through the ages, and now you have been tasked by the archmagus Noah to bring the laboratory's buried secrets into the light of day.

— In-game description

Eureka Orthos (Floors 81-90) is a level 90 deep dungeon introduced in patch 6.35 with Endwalker.

Floors 71-99 Guide by Joonbob

Enemies

Enemies
Enemy Level Aggro Type Known Floors Notes
Orthos Hecteyes 90 Sound 81-83 Catharsis - Massive telegraphed point-blank AoE
Orthos Persona 90 Proximity 81-83
Orthos Catoblepas 90 Sight 81-84 Out of Combat: Demon Eye - Gaze inflicts petrify
Orthos Deepeye 90 Sight 83-85
Orthos Pudding 90 Sight 84-86 Dark II - Massive telegraphed frontal conal AoE
Orthos Abyss 90 Sight 84-87
Orthos Spartoi 90 Sight 85-88 Late Telegraph: Triple Trial - frontal conal AoE
Orthos Pegasus 90 Sight 86-89 Late Telegraph: Nicker - point-blank AoE
Orthos Wraith 90 Proximity 86-89 Late Telegraph: Scream - large point-blank AoE inflicts terror
Orthos Ahriman 90 Sight 87-89 Blistering Blink - massive telegraphed line AoE
Mimic 90 Proximity 81-89 Gold Chests
Patrolling Enemies
Enemy Level Aggro Type Known Floors Notes
Orthoiron Corse 90 Proximity 81-84 Late Telegraph: Glass Punch - Small frontal conal AoE
Orthos Gourmand 90 Proximity 84-86 Untelegraphed: Inhale - pulls in players. Untelegraphed/fast cast: Moldy Sneeze - small frontal conal AoE
Orthos Specter 90 Proximity 86-89 Late Telegraph: Left/Right Sweep - Massive 210 degree cleave on corresponding side. Ringing Burst - massive donut AoE. Surrounding Burst - large point-blank AoE.
Dread Beasts
Enemy Level Aggro Type Known Floors Notes
Demi-Cochma 90 Sight 81-89 Grants 30m Vulnerability Down buff (10%) upon defeat
Lamia Queen 90 Sight 81-89 Grants 30m Rehabilitation buff upon defeat
Meracydian Clone 90 Sight 81-89 Grants 30m Damage Up buff (10%) upon defeat

External Links

Deep Dungeon Compendium Floor 81-90 guide

Floor 90 Boss

Aggressive difficulty r6.png Administrator