The Nuclear Option (Railroad)

 is a quest and Fallout 4 achievements and trophies in Fallout 4.

Quick walkthrough

 * 1) Talk to Desdemona
 * 2) Talk to Z1-14
 * 3) Kill everyone in relay room
 * 4) Talk to Desdemona
 * 5) Use terminal to override Institute lockdown
 * 6) Reach the reactor
 * 7) Plant fusion pulse charges inside reactor
 * 8) Talk to Desdemona
 * 9) Speak to Tinker Tom
 * 10) Step into relay
 * 11) Use the detonator
 * 12) Talk to Desdemona