To get this achievement/trophy, the player has to make sure Chloe is successfully protected and survives the campaign. Firstly, the player has to rescue Chloe, either during "Karma" or Second Chance. Next, the player also has to ensure Farid survives "Achilles' Veil". With these two factors, during the server room sequence in "Odysseus", Farid will sacrifice himself to protect Chloe and ensures her survival, no matter what the other variables may be.
Ultimately, Chloe's survival depends on whether the U.S.S. Barack Obama is saved or destroyed. In order for the U.S.S. Obama to be saved, the player must complete ALL Strike Force missions, especially killing Zhao in Dispatch, and spare Briggs in "Odysseus". The ship will be protected from destruction and the player will get the achievement/trophy.