Description: Crack the celerium worm.
Gamerscore: 20G

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This achievement requires several steps between various missions in order for Karma to survive (which is your goal).
There is another achievement called "Showdown" that is sort of the opposite of this achievement so please read that description as well to plan out your course of action on these two achievements. It is important that for you to get the achievement, you rewind the story. Go to replay mission and hit RB and it will rewind so you can change the outcome of the story in the end while keeping all challenges and weapons in progress.

1) Kill Defalco in the mission "Karma"
2) Complete strike force mission "Second Chance" (If available).
3) Complete "Suffer with Me" and additional Srikeforce mission
4) Kill Harper with Farid in mission "Achilles Veil" (Farid survives).
5) Spare Admiral Briggs in "Odysseuss" mission by shooting him in the leg.

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