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The Nuclear Option is a main Quest in Fallout 4 and is the culmination of the game's main narrative. The options and objectives depend on the Faction you ally with. This quest becomes available after completing the essential Quests in your respective chosen Faction with the exception of The Institute. Click on the appropriate option below for a quest walkthrough for each Faction.


The Nuclear Option Information



Brotherhood of Steel Method Minutemen Method Railroad Method


The Nuclear Option Brotherhood of Steel

Quest Giver
elder_maxson.jpg
Elder Maxson
Type
Brotherhood of Steel Quest
Reward
??
Location
The Institute (Location)
Previous Quest
Ad Victoriam
Next Quest
A New Dawn
The Nuclear Option Brotherhood of Steel is a Quest in Fallout 4. It is one of 3 variations of The Nuclear Option main quest, along with The Nuclear Option The Minutemen and The Nuclear Option The Railroad. This quest is available by completing the essential Quests of the Brotherhood of Steel.


The Nuclear Option Brotherhood of Steel Information



Objectives

  1. Talk to Elder Maxson
  2. Reach Institute reactor
  3. Use terminal to override Institute lockdown
  4. (Optional) Issue evacuation order
  5. Reach the reactor
  6. Plant fusion pulse charge inside reactor
  7. Talk to Elder Maxson
  8. Talk to Proctor Ingram
  9. Talk to Shaun
  10. Step into the relay
  11. Activate detonator
  12. Talk to Elder Maxson




Locations



Enemies




Walkthrough


Rad Resist.png NOTE: This quest is only available if you have chosen allegiance to the Brotherhood of Steel. Head through the robotics area, defeating Synth enemies along the way. Drop through the hatch to enter the BioScience lab, and continue towards the reactor entrance, which at this point has had its blast door activated.

Rad Resist.png Press the button at the central elevator to enter Father's quarters. You will obtain the password to override from him, or you can hack the terminal. Do either, and activate the Master Security Lockdown Override. You may trigger an evac warning to spare lives; this is an optional choice.

Rad Resist.png Go back through Advanced Systems to enter the reactor chamber. If you haven't evacuated the facility, you will encounter synths and scientists. Access the reactor door and then activate the housing.

Rad Resist.png Proctor Ingram will teleport you to the Institute Relay Control Room. Speak to Elder Maxson, and then Ingram will mention a child nearby. Speak to him and you have 2 options:
  • Agree to save him and look after him, at which point Ingram will look after him until you reunite at Boston Airport.
  • Say the child must stay.

Rad Resist.png Speak into the relay and teleport to the Mass Fusion Building roof where you can press a button to complete your mission. Speak with Elder Maxson to conclude your main quest journey.






Notes & Notable Loot


The Nuclear Option The Minutemen

Quest Giver
preston_garvey.jpg
Preston Garvey
Type
The Minutemen Quest
Reward
??
Location
The Institute (Location)
Previous Quest
Defend the Castle
Next Quest
With Our Powers Combined
The Nuclear Option The Minutemen is a Quest in Fallout 4. It is one of 3 variations of The Nuclear Option main quest, along with The Nuclear Option Brotherhood of Steel and The Nuclear Option The Railroad. This quest is available by completing the essential Quests of the Minutemen.


The Nuclear Option The Minutemen Information



Objectives

  1. Talk to Preston Garvey
  2. Talk to Sturges
  3. Gain access to The Institute
  4. Activate Institute Relay
  5. Talk to Preston Garvey
  6. Reach Institute reactor
  7. Use terminal to override Institute lockdown
  8. (Optional) Issue evacuation order
  9. Reach the reactor
  10. Plant fusion charge inside reactor
  11. Talk to Preston Garvey
  12. Talk to Sturges
  13. Talk to Shaun
  14. Step into the relay
  15. Use the detonator
  16. Talk to Preston Garvey



Locations




Enemies




Walkthrough


Rad Resist.png Your affiliation with the Minutemen is reaching a culmination and your next move is to go to The Institute (Location). Speak with Preston Garvey and Sturges who will tell you how to enter the Institute. The data you stole during Inside Job revealed to them the location of an Institute teleporter. Sturges gives you Institute Relay Targeting Sequence to insert into the terminal in the Institute and an Automatic Laser Musket.

Rad Resist.png Travel to the river in Cambridge, east of Greentech Genetics. It is recommended to wear a Hazmat Suit or Power Armor here to negate the radtiation of the river. Dive into the water and swim to the Public Works Maintenance area. Once there activate the keypad.

Rad Resist.png Open the gate and drop through the pipe to access the swer. Locate and follow the white piper with arrows on it through the sewer. Hack the terminal or pick the lock of the door, and head through the hole in the wall. Alternatively, head through the open security door northeast of the first door. Fight your way to the open pipe and go in to access the Institute. Open the hatch to enter.

Rad Resist.png Load the targeting sequence that Sturges gave you into the relay terminal to teleport Preston and some Minutemen in. Speak with Preston to obtain a Fusion Pulse Charge. Head through the robotics area, defeating Synth enemies along the way. Drop through the hatch to enter the BioScience lab, and continue towards the reactor entrance, which at this point has had its blast door activated.

Rad Resist.png Press the button at the central elevator to enter Father's quarters. You will obtain the password to override from him, or you can hack the terminal. Do either, and activate the Master Security Lockdown Override. Preston will ask you to trigger an evac warning to spare lives; it is your choice to comply or not.

Rad Resist.png Go back through Advanced Systems to enter the reactor chamber. If you haven't evacuated the facility, you will encounter synths and scientists. Access the reactor door and then activate the housing.

Rad Resist.png Sturges will teleport you to the Institute Relay Control Room. Speak to Preston, and then Sturges will mention a child nearby. Speak to him and you have 2 options:
  • Agree to save him and look after him, at which point Sturges will look after him until you reunite at Sanctuary or other location you sent Sturges to live.
  • Say the child must stay.

Rad Resist.png Speak into the relay and teleport to the Mass Fusion Building roof where you can press a button to complete your mission. Speak with Preston to conclude your main quest journey.





Notes & Notable Loot


The Nuclear Option The Railroad

Quest Giver
desdemona.jpg
Desdemona
Type
The Railroad Quest
Reward
??
Location
The Institute (Location)
Previous Quest
Rockets' Red Glare
Next Quest
Burning Cover
The Nuclear Option The Railroad is a Quest in Fallout 4.


The Nuclear Option The Railroad Information



Objectives

  1. Talk to Desdemona
  2. Talk to Z1-14
  3. Kill everyone in the relay control room
  4. Talk to Desdemona
  5. Reach the reactor
  6. Use terminal to override Institute lockdown
  7. (Optional) Issue evacuation order
  8. Reach the reactor
  9. Plant fusion pulse charge inside reactor
  10. Talk to Desdemona
  11. Talk to Tinker Tom
  12. Talk to Shaun
  13. Step into the relay
  14. Activate detonator
  15. Talk to Desdemona






Locations



Enemies




Walkthrough


Rad Resist.png NOTE: This quest is only available if you have sworn allegiance to The Railroad and have completed the Railroad quest Rockets' Red Glare. Speak to Desdemona and accept her task to infiltrate The Institute.

Rad Resist.png Relay into The Institute (Location) and link up with Z1-14. Committing to the cause at this point will cause any of The Institute Quests you've had in progress to fail so before speaking with Z1-14, make sure you've wrapped up any essential or radiant quests for them you were hoping to finish with the exception of End of the Line which will make the Railroad hostile. Once ready, eliminate the room of hostiles and Desdemona and other members of the Railroad will port in and hand you a Fusion Pulse Charge which you will be using to bring an end to the conflict for good.

Rad Resist.png Head through the robotics area, defeating Synth enemies along the way. Drop through the hatch to enter the BioScience lab, and continue towards the reactor entrance, which at this point has had its blast door activated.

Rad Resist.png Press the button at the central elevator to enter Father's quarters. You will obtain the password to override from him, or you can hack the terminal. Do either, and activate the Master Security Lockdown Override. You may trigger an evac warning to spare lives; this is an optional choice.

Rad Resist.png Go back through Advanced Systems to enter the reactor chamber. If you haven't evacuated the facility, you will encounter synths and scientists. Access the reactor door and then activate the housing.

Rad Resist.png Tinker Tom will teleport you to the Institute Relay Control Room. Speak to Desdemona, and then Tom will mention a child nearby. Speak to him and you have 2 options:
  • Agree to save him and look after him, at which point Tom will look after him until you reunite at the Railroad base.
  • Say the child must stay.

Rad Resist.png Step into the relay and teleport to the Mass Fusion Building roof where you will press activate a detonator to complete your mission and rid the Commonwealth of the Institute. Speak with Desdemona to conclude your main quest journey.





Notes & Notable Loot




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