Is it Worth Joining the Underground Operation in Fallout 4?

The first thing to do if you ever want to start this “Underground Operation” quest on Fallout 4, it will be to get to the level of Goodneighbor. Don't know where this is? Go to the location we have shown you on the map below.

You will come to an alley and will have to knock on the door at the end. Then talk to Bobbi to start the quest and be able to enter. Then open the door on the left and follow the employees in the tunnel until Muddy people appearget rid of them.

Then talk to Bobby and then go to the Diamond City market to meet a masked person who will ask you to head to the security post. On the spot, persuade the guards to release Mel. To do this, you can use charisma, occupy them with the Protectron or steal the cell key.

Then go talk to the prisoner and return to Bobbi's house. More precisely, it is the basement that you will have to go to. Talk to him and move forward in the tunnel. Then interact with the wall so that Mel's robot knocks it down.

Access Hancock's Vault

Continue your progression by eliminating the Muddy people and knock down the wall at the end of the tunnel, on the right. In the metro, this time it's ghouls who block your way. Once rid of these, go to the car on the right, then destroy the wall to the west. Then enter the pipe and continue your progress.

After the fight against the Fangeux, turn right and at the end of the tunnel, go through the hole in the wall. Then turn right and eliminate the ghouls. Continue towards the back corridor where there is another wall to knock down. Continue your progress until you arrive in the basement of the vault.

Then chat with Bobbi and wait for the robot to create an entry for you. Once that's done, enter the vault. It is at this moment that the moral choice of the quest will arise: will you betray Bobbi or follow through?

Option 1: Side with Bobbi and loot Hancock's vault

First option, you tell yourself that you didn't do all this for nothing. So you decide to continue on your path and help Bobbi loot Hancock's safe. For that, support Bobbi in the dialogue with Fahrenheit. Then kill everyone.

By searching the bodies, you recover the key to the chest. Open the wagon and once you have spoken with Bobbi, you will be done with this “Underground Operation” quest. You will then gain 391 experience points, as well as the sum of 200 Caps.

Option 2: Betray Bobbi in Fallout 4

The other option is to decide to betray Bobbi at the very last moment. During the dialogue we spoke to you about previously, try to convince Bobbi to leave. If you succeed, you will make her go away and not a drop of blood will be shed.

On the other hand, if you fail, you will inevitably have to get rid of her. To end the quest, all you have to do is talk to Fahrenheit. You will then receive the same amount of experience, but instead of the 200 Caps, a unique weapon, the Carbonizer.