Cor Operation and Cor Memorial are two linked instances set in Coral City (Cor) as part of Episode 17.1 Terra Gloria. Cor Operation is the story run -- your party secures the Elyumina machines to summon and defeat the EL1-A17T boss. Cor Memorial is the daily repeat version of the same operation.
💡Both versions are tied to the Episode 17.1 Terra Gloria questline. Complete the story run first, then the daily opens up. Entry is from Coral City.
Requirements
| What | Details |
|---|---|
| Pre-quest | Episode 17.1 Terra Gloria questline (Cor chapter) |
| Party | Recommended -- the boss summons machines and hits hard |
Enter from Coral City (Cor) after reaching the Cor chapter.
The entry trigger for both Cor Operation and Cor Memorial is found inside Coral City (map sp_cor). Talk to the mission NPC to begin. The story run is available when you reach the Cor section of the Terra Gloria questline. The daily version becomes available after clearing the story run.
Activate four trap locations across the map.
Inside the instance, four trap locations are marked around the facility. Your party must visit each one and activate the trap mechanism. The activation sequence triggers the Elyumina machines to emerge.
Work through the four locations in any order. Activation at each point takes a moment -- stay close to the trigger and wait for the confirmation message.
💡The Elyumina machines appear as you activate traps. Some will engage immediately. Focus on the activation objective first and deal with any machines that spawn before moving to the next point.Defeat the Elyumina machines.
As you activate traps, Elyumina machines appear. These are mechanical combat units with ranged attacks. Clear them as you go through the four trap locations.
Once all four traps are activated and the machines are defeated, the EL1-A17T boss is summoned to the central area.
Defeat the EL1-A17T boss.
EL1-A17T is the facility's main mechanical weapon, now fully active. It fights in the center of the map after all four traps have been activated.
| Boss | Notes |
|---|---|
| EL1-A17T | Mechanical unit; heavy ranged attacks; summons additional machines during the fight |
Focus the boss down while managing any additional machine units it summons. After EL1-A17T falls, the instance completes.
Collect rewards on completion.
Both the story run and the daily give Mysterious Components and Cor Cores on completion.
Mysterious Component -- multiple per completionCor Core -- per completion (from the Est encounter or operation reward)Notes
- Story then daily. Cor Operation (story) must be completed before Cor Memorial (daily) unlocks.
- Four trap activations required. The boss will not appear until all four traps are activated and the Elyumina machines are cleared.
- Mechanical enemies. EL1-A17T and its summoned machines use ranged attacks -- melee classes should watch positioning.
- Episode 17.1 content. Both versions are gated behind the Cor chapter of the Terra Gloria story.