Nuclear Family

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Nuclear Family is the final Institute main quest and achievement/trophy in Fallout 4.

Walkthrough Edit

Return to the Institute to speak with Father and listen to his final words before he dies of end stage cancer. Shown next are glimpses of the player character's life prior to the war and their experiences since.

This short quest completes the path through the main story. The player character may continue their adventures in the Commonwealth afterward.

Quest stagesEdit

10 Speak to Father
200Quest finishedIcon checkQuest complete
1500Quest finishedIcon checkQuest failed


  • If the player kills Father before his natural death, this quest will still complete. However, the player will also be Banished from the Institute.

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