Endwalker content

Eureka Orthos (Floors 91-100)

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See also: Eureka Orthos

Deep Dungeon.png

Eureka Orthos (Floors 91-100)

EO 91-100 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 91-100) 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 Mining Drone 90 Sound 91-93 Run Amok - 4 knockbacks on target
Late Telegraph: Aetherochemical Cannon - 180 degree frontal cleave
Orthosystem α 90 Proximity 91-93 Late Telegraph - Aetherochemical Laser α: massive frontal cone
Orthodrone 90 Proximity 91-98 Untelegraphed - Self-detonate: Point-blank AoE used several seconds after death
Orthos Motherbit 90 Proximity 93-95 Late Telegraph - Citadel Buster: Line AoE in front
Orthos Zaghnal 90 Sight 93-95 Out of Combat - Beastly Roar: Massive point-blank AoE with late telegraph
Pounce Errant - Knocks back all players near marked player
Orthos Sphinx 90 Sight 94-96 Late Telegraph - Swinge: massive frontal cone
Orthos Mithridates 90 Sight 95-97 Late Telegraph - Laserblade: Large 270 degree frontal cleave
Orthos Durga 90 Proximity 96-98 Brainjack: Unavoidable confused, followed by a baited circle AoE (Thermobaric Charge)
Orthos Fitter 90 Sight 96-98 Out of Combat - Unholy: Massive point-blank AoE with late telegraph
Orthonaught 90 Sight 96-98 Late Telegraph - Rotoswipe: small frontal cone
Mimic 90 Proximity 91-98 Gold Chests
Patrolling Enemies
Enemy Level Aggro Type Known Floors Notes
Orthosystem γ 90 Proximity 91-94 Late Telegraph - High Voltage: Interruptible massive point-blank AoE
Repelling Cannons: Point-blank AoE
Ring Cannon: Donut AoE
Servomechanical Orthotaur 90 Sight 93-98 Late Telegraph - 32-tonze Swipe: Large frontal cone
128-tonze Swing: Large point-blank AoE
Servomechanical Orthochimera 90 Sight 95-98 Untelegraphed - The Ram's Voice (point-blank AoE), The Dragon's Voice (donut AoE)
Late Telegraph - The Dragon's Breath / Engulfing Ice: Get behind
Scorpion Sting: Fast rear cone
Dread Beasts
Enemy Level Aggro Type Known Floors Notes
Demi-Cochma 90 Sight 91-98 Grants 30m Vulnerability Down buff (10%) upon defeat
Lamia Queen 90 Sight 91-98 Grants 30m Rehabilitation buff upon defeat
Meracydian Clone 90 Sight 91-98 Grants 30m Damage Up buff (10%) upon defeat

External Links

Deep Dungeon Compendium Floor 91-100 guide

Floor 99 Boss

Unlike prior deep dungeons, this final set of floors contains a boss at the end.

Aggressive difficulty r6.png Excalibur

Dialogue

Excalibur: Connection to biological organism Artorius stable. Initiate elimination protocol.
Excalibur: All aether cores free. Initiate paradox protocol─releasing extinction waves!
Powerful magicks obstruct the flow of your body's aether, causing your resistances to plummet!
Excalibur: Generating attack module. Initiate synchronous strike.
Excalibur: Maximizing aether output in preparation for thermal divide...
Excalibur: Intruders persist. Enemies of the empire must be purged.
Excalibur: Deploying Dimensional Bla─ Bzzzt... This...sword... I remember...you...
Excalibur: Deploying Dimensional Blade. Power output comparable to original weapon.
Excalibur: I shall fulfill my duty.
Excalibur: For the glory of Allag.
Excalibur: Damage to biological organism exceeds safe levels. Regenerative processes impeded─ Bzzzt... Release...me...
Excalibur: Phlegethon...dear friend... I...am...here.
Excalibur: I am... No... Phlegethon...forgive me...
Mechanical Voice: Warning. Excalibur separated from organic host. Initializing transfer to floor 100 for surveillance.