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Mass Effect 2 Legendary Edition

Mordin: Keep or Destroy Maelon's Data

By
Claire Farnworth
&
Matt Chard

Near the end of Mordin’s Loyalty mission Old Blood, you have the choice to keep or destroy Maelon’s research data. This will have consequences for Mass Effect 3.

Choice: Keep or Destroy Maelon’s Data

Near the end of Mordin’s Loyalty mission Old Blood, you’ll enter Maelon’s Lab, here, you’ll get a scene of Maleon scanning a holo screen with an Omni-Tool, Mordin will confront him, and Maelon will tell him his hands are already bloody, but it’s worth it, if it can undo the genophage, mainly because he sees the Galaxy better off with the Krogan than without them. Once that’s been dealt with, you’ll have the choice on what should happen to the data, and the choice you make here will have direct consequences for a character in Mass Effect 3.

Destroy the data

In the event of destroying the data, Eve, will die in the mission Priority Tuchanka in Mass Effect 3. Also, if Wrex wasn’t recruited in Mass Effect 1 or if he was sacrificed on Virmire, you’ll get the chance to save Mordin, and you’ll be able to sabotage the genophage cure, and convince the doctor to walk away with their life still intact in Mass Effect 3.

Keep the data

If you decide to keep the data, Eve will survive during Priority Tuchanka in Mass Effect 3, but this will make it impossible to cure the genophage without killing the Doctor present. Also, Mordin will sacrifice himself during the dispersal of the Genophage cure, or you (Shepard) will kill him.

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Guide Information

  • Publisher
    Electronic Arts
  • Platforms
    PC, PS4, XB One
  • Genre
    Action RPG, Third-person shooter
  • Guide Release
    14 May 2021
  • Last Updated
    7 September 2021
    Version History
  • Guide Author
    Paul Williams

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The guide for Mass Effect 2 Legendary Edition features all there is to see and do including a walkthrough containing coverage of all the main campaign Missions, Assignments, as well as a detailed breakdown of all the important choices, class builds and much more!

  • A complete walkthrough for the entire campaign, including all recruitment and loyalty missions, as well as details on weapons, resources and research projects found during each mission.
  • Every Assignment covered.
  • Updated media and formatting for the Legendary Edition.
  • In-depth look at the major choices in Mass Effect 2 and consequences - both short and long term - of each.
  • Full details on all possible Romances.
  • In-depth Class builds for Shepard with a focus on Insanity difficulty strategies.
  • Details on every Power.
  • Builds for all squadmates.
  • Trophy/Achievement guide, including embeded walkthrough links.

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