Fallout 4
84 Achievements
1,600
108-139h
Oversight
Become Overseer
15
2.44%
How to unlock the Oversight achievement in Fallout 4 - Definitive Guide
I'd recommend saving before doing this so you can complete the quest lines in the DLC.
Edit: This achievement was originally thought to be missable since the overseer can remain in her position if you press X in the final conversation, though @Trevis tested killing her after letting her remain and still got the achievement
Make sure to save before so you can go back.
After building the Overseer's Desk and assisting with the interviews, make a manual save then kill the Overseer. If you choose to finish the quest instead (or after getting the trophy and reloading the manual save) see this post for a list of required resources (including what you need for the Overseer's Desk): LINK
Credit to:
- PSN user TristanRovito for informing me that killing the Overseer pops the trophy.
- Thedah for pointing out this method is a time- and resource saver.
- darkrequiem7 for confirming the trophy pops, even if you kill the Overseer after convincing her to stay.
After completing "Explore Vault 88" and "A Model Citizen," and you have obtained the other two achievements in this add-on, make a manual save. You can now kill Overseer Barstow at any time in order to unlock this achievement. Feel free, as it's encouraged, to reload your save so you can carry on with the questline.
Alternatively, this will also unlock after completing the last experiment in "Lady Luck" and allowing Barstow to pass the mantle of Vault 88 Overseer onto the Sole Survivor.