Mass Fusion (quest)

Mass Fusion is a quest in Fallout 4.

Quick walkthrough

 * 1) Speak with Allie Filmore
 * 2) Relay to Mass Fusion building or Inform the Brotherhood
 * 3) Locate the Beryllium Agitator
 * 4) Retrieve the Executive Keycard
 * 5) Proceed to the reactor level
 * 6) (Optional) Restore power to the elevator
 * 7) Retrieve the Beryllium Agitator
 * 8) Unlock the reactor
 * 9) Take the Beryllium Agitator
 * 10) Eliminate reactor level security
 * 11) Exit Mass Fusion
 * 12) (Optional) Assist Institute forces in the lobby
 * 13) Speak with Allie Filmore

Detailed walkthrough
Dickbutt

Behind the scenes

 * A beryllium initiator is used to generate neutron flux for starting nuclear fission reactions.

Bugs

 * Sometimes happen after taking the elevator up making the sole survivor appears between the building and a fall would result in death.