There’s a better way to complete more side quest with the Institute and others before doing the nuclear option. Watch the video below with all the instructions you need.
Below is the old post. Follow the instructions in the video above.
Fallout 4 has a 5th ending after all and I think is the best because you’ll have tons of more game play left after the main story of the game is completed. I found this gem on YouTube and I think everyone should know about this awesome ending.
All credit goes to “The Triple S League” via YouTube
Step 1: Before completing “Reunions,” complete all main and both side quests (once each) for the Brotherhood of Steel recon team. Talk Brandis down from being crazy.
Step 2: Complete “Reunions” and “Dangerous Minds.” (For proper completion, keep Preston at the Castle.)
(a) You will have received “Tradecraft” and “Shadow of Steel.” DO NOT advance in either of these quests.
(b) Focus on the Minutemen as you continue down the main quest line. Use the Minutemen to gain access to the Institute.
(c) Get yourself banished from the Institute. You can play along and poke around for a bit first if you like, but if you do, you’ll have to murder someone to get banished (might we suggest those ♥♥♥♥♥♥♥s down in synth retention?). You may safely complete “Institutionalized,” but do not progress any farther before getting yourself kicked out. Don’t even speak to Father again after completing “Institutionalized.” DO NOT complete “Synth Retention.” (Give holotape to Sturges.)
(a) You will have received “Form Ranks” for the Minutemen. DO NOT advance this quest.
(b) DO NOT start “Defend the Castle.” Don’t even go to the Castle.
(c) Complete all quests for the Brotherhood from “Shadow of Steel” to “Show No Mercy.” DO NOT complete “Show No Mercy.” Don’t even get on the Vertibird. Grab ALL side quests from the Brotherhood and keep them open.
Step 5: Complete “Form Ranks” and “Defend the Castle.” Start “The Nuclear Option” for the Minutemen but DO NOT complete it.
Step 6: Complete all Railroad quests from “Tradecraft” to “Randolph Safehouse 6.”
Step 7: Complete “The Nuclear Option.”
That’s it! This process will result in all factions loving you. The heads of the Brotherhood will praise your actions (except Max, who is pouting and won’t talk to you). From here on out, they will not start fights and will only kill mutants and raiders. Many of their quests and side quests are repeatable. The Railroad has a whole new line of quests for you, and there is fun to be had everywhere (however, don’t talk to P.A.M. after this; she wants to start a war with the Brotherhood). Enjoy your (relatively) peace-filled Commonwealth!
(BTW, if one of your companions is being attacked by another faction, this is most likely because they got hit with some crossfire while in a multi-faction battle and then shot back. This happens often…and is annoying as hell. Danse will shoot down his own Vertibird then leave you because he is mad that you shot down his friends. Yeah.)
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