Endwalker content

Eureka Orthos (Floors 41-50)

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See also: Eureka Orthos

Deep Dungeon.png

Eureka Orthos (Floors 41-50)

EO 41-50 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 41-50) is a level 90 deep dungeon introduced in patch 6.35 with Endwalker.

Floors 41-70 Guide by Joonbob

Enemies

Enemies
Enemy Level Aggro Type Known Floors Notes
Orthos Abaia 90 Sight 41-42
Orthos Huwasi 90 Sight 41-43
Orthos Bergthurs 90 Proximity 41-44 Untelegraphed: Elbow Drop - instant cast backward cone if player is standing behind
Orthos Spriggan 90 Sight 42-45
Orthos Hedetet 90 Sight 43-46
Orthos Goobbue 90 Sight 45-47 Inhale - Instantly draws in players in front and follows with Sickly Sneeze, a fast cast untelegraphed frontal cone AoE. Get behind after being sucked in.
Orthos Kukulkan 90 Sight 46-49
Orthos Mudman 90 Proximity 46-49 Inflicts an uncleansable heavy for 8s.
Orthos Apa 90 Proximity 47-49
Orthos Gelato 90 Sight 47-49 Explosion - Enrage at 30% HP, can LoS
Mimic 90 Proximity 41-49 Silver Chests
Patrolling Enemies
Enemy Level Aggro Type Known Floors Notes
Orthos Acheron 90 Sight 41-44 Quake - Massive point blank circle enrage, interrupt or line of sight
Orthos Kelpie 90 Sight 44-46 Gallop - Charges at target, can be stunned, slept or line of sight dodged. Untelegraphed: Bloody Puddle - Large point blank circle enrage used after Gallop if Gallop was not stopped
Orthos Hoarhound 90 Sight 46-49 Abyssal Cry - inflicts stun, can LoS. Ecliptic Bite - inflicts Instant Death on stunned players
Dread Beasts
Enemy Level Aggro Type Known Floors Notes
Demi-Cochma 90 Sight 41-49 Grants 30m Vulnerability Down buff (10%) upon defeat
Lamia Queen 90 Sight 41-49 Grants 30m Rehabilitation buff upon defeat
Meracydian Clone 90 Sight 41-49 Grants 30m Damage Up buff (10%) upon defeat

External Links

Deep Dungeon Compendium Floor 41-50 guide

Floor 50 Boss

Aggressive difficulty r6.png Servomechanical Chimera 14X

Servomechanical Chimera 14X uses The Dragon's Voice and The Ram's Voice as component parts of differently named abilities. However, they still function the same as always - The Dragon's Voice is a donut AoE around the boss, The Ram's Voice is a circle AoE around the boss.

Songs of Ice and Thunder: The Ram's Voice followed immediately with The Dragon's Voice. Get OUT then IN.

Songs of Thunder and Ice: The Dragon's Voice followed immediately with The Ram's Voice. Get IN then OUT.

Leftbreathed Thunder: Untelegraphed 180 degree cleave to the boss's left.

Rightbreathed Cold: Untelegraphed 180 degree cleave to the boss's right.

Thunderous Cold: Tethered charge attack to one player, then The Dragon's Voice followed immediately with The Ram's Voice. Get AWAY to reduce damage, then Get IN then OUT.

Cold Thunder: Tethered charge attack to one player, then The Ram's Voice followed immediately with The Dragon's Voice. Get AWAY to reduce damage, then Get OUT then IN.

Cacophany: Boss runs to the middle and then spawns orbs that tether to and chase players for a short time. If the orb gets in range, or after a short time, it casts Chaotic Chorus a point blank circle AoE.

Rotation

  • Beginning of fight:
    • Songs of Ice and Thunder OR Songs of Thunder and Ice
    • Leftbreathed Thunder OR Rightbreathed Cold
    • Thunderous Cold OR Cold Thunder
    • Leftbreathed Thunder OR Rightbreathed Cold
  • Repeating:
    • Cacophony
    • Leftbreathed Thunder OR Rightbreathed Cold
    • Thunderous Cold OR Cold Thunder
    • Leftbreathed Thunder OR Rightbreathed Cold
    • Songs of Ice and Thunder OR Songs of Thunder and Ice