Mass Effect 3 Guide: How to Complete Dekuuna: Elcor Extraction
BioWare’s Mass Effect 3 is full of side content that quietly reshapes the endgame, and one of the most specific examples is the Dekuuna: Elcor Extraction mission. It’s a Citadel-side job that only becomes available after you clear Priority: Rannoch, and it’s built around one simple loop: locate stranded Elcor, confirm where they can be recovered, then bring the results back to the Elcor Ambassador so the war effort can count them.
Why this side mission matters to players
On paper, this is “just” another Search and Rescue task—search the system for survivors, try to extract them, and return with what you can. In practice, it’s a mission that affects two things players care about right after the game’s late-game gate: your reputation standing with the Elcor and your War Asset tally.
- It only appears after you finish Priority: Rannoch, which places it right at the edge of the final stretch.
- It directly grants a War Asset for the overall conflict (the Elcor Flotilla), including a specific TMS value.
- It provides rewards tied to your diplomacy through a reputation bump, plus a chunk of mission experience.
Mission Stats and rewards
Video Guide
This section of the guide is listed as a “Video Guide” entry, but no additional details are provided in the source text.
Mission Rewards
- Mission Experience: 120 XP
- Reputation: +5
- War Asset: Elcor Flotilla (40 TMS)
Travel to Widow
- Prerequisite: Complete “Priority: Rannoch”
- Location: Serpent Nebula – Widow – Citadel – Citadel Embassies
This Side Mission is the only Citadel-based mission that shows up after you complete Priority: Rannoch, which also leads into the game’s final act. The Citadel itself is the galaxy’s main hub and is consistently marked in the western portion of the Milky Way map.
Meet the Elcor Ambassador
Once Priority: Rannoch is done, you can speak with the Elcor Ambassador you may have already noticed while exploring the Citadel Embassies. The conversation makes the situation clear: the Reapers have reached Dekuuna, the Elcor homeworld, and the Ambassador is pleading for Shepard’s help because every other race has refused him so far.
Find the Elcor Flotilla
- Location: Silean Nebula – Phontes – Dekuuna – Oltan
The Elcor Flotilla is found in the Silean Nebula, close to the Milky Way’s western edge. From there, you should head north to the Phontes system, which costs about 170 units of fuel.
Next, move to Dekuuna, which is the second planet in the system, and then locate its moon, Oltan. Use a scan to verify that something recoverable is present, then enter orbit and launch a Probe at the spot tied to the quest item. Successfully completing this step adds the Elcor Flotilla as a War Asset worth 40 TMS.
While you’re in the Silean Nebula anyway, it’s also worth checking for additional Search and Rescue items that are available there.
Deliver the Elcor Flotilla
After you recover what you can, return to the Elcor Ambassador on the Citadel to report your findings. This update provides +5 Reputation and 120 XP. Shepard asks how many Elcor were extracted, and the Ambassador responds—without the usual prefixes—with the blunt line: “…not…enough…”. It’s a rough moment, and it underscores the mission’s theme: even when you succeed, the scale of the crisis is still bigger than any single extraction.
For players digging deeper into the game around this point, the guide lists additional help topics, including Legendary Edition Changes, How-To Guides, Key Choices and Consequences, Romance Guide, Walkthrough, and Side Missions.
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