The Nuclear Option (Brotherhood of Steel)

The Nuclear Option is a quest and achievement/trophy in Fallout 4.

Quick walkthrough

 * 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

Detailed walkthrough
Excising Your Option

You head through the Old Robotics area. Expect heavy synth resistance and laser turrets. Locate and drop through the hatch and enter the Institute BioScience laboratory. Work your way to the reactor entrance. Not surprisingly, the blast door has been activated.

At the central elevator, press the button. Enter Father’s quarters and receive the override password from him. Use it, or hack the terminal (Novice). Activate the Master Security Lockdown Override. (Medium) There are three options if you answer Father regarding why he should help you.

An Unequivocal Reaction

Approach the Institute Advanced Systems and maneuver to the reactor chamber. If no evacuation has been called, expect a heavy synth presence. Access the reactor door and activate the reactor housing.


 * Proctor Ingram teleports you to the Institute relay control room. Speak with Elder Maxson before Ingram interjects regarding an unexpected guest in the vicinity. Speak to the little fellow:


 * Agree to take him under your wing and save his life. Proctor Ingram ensures his safety. Find him at Boston Airport.

Inform Proctor Ingram that the child must remain here. After speaking into the relay and teleporting to the roof of the Mass Fusion building, you’re able to conclude this operation without room for interpretation. Your Main Questing ends after you speak to Elder Maxson about the future of the Commonwealth.