Speak to the Ghoul Prisoner, free him and then enter the vault through the cell (with an actual door) located next to the ghoul's cell.Bypass Harry with a high Speech skill, Sneak, or violence.Travel to the Necropolis and enter the sewers.(optional) Travel to the Water Merchants, and ask them to send water to Vault 13.Descend to level 3, enter the area were the command center should be, earn 500 XP for discovering the destroyed command center.On the second level another rope can be found in the locker in a side room on the way to the second broken elevator shaft.Enter Vault 15 and use the rope on the broken elevator shaft.
