In the final area, there is a terminal that must be hacked or unlocked with a password in the far room on the upper floor past a mole rat brood mother.
The true purpose of Vault 81 as an infectious disease incubation and vaccine development facility is also discovered. During the investigation, they must fight or sneak their way through run-down rooms full of Vault 81 lab mole rats, which will transmit a disease if they manage to bite the Sole Survivor, their companion or any activated Protectron, conferring a potentially permanent loss of 10 HP. They are asked to go into that part of the vault and find a cure.
One must follow Bobby De Luca to the entrance hidden in the reactor room. Penske begins the quest.Īustin was bitten by a mole rat when wandering in a secret part of Vault 81 and subsequently fell ill.
Upon the Sole Survivor's return, Austin Engill will have been moved to the vault's medical bay. Forsythe, leave the vault and either pursue the Here Kitty, Kitty quest to find Ashes or wait for 24 hours or more before returning (the player character may have to complete another quest in addition to waiting 24 hours before the next scene will trigger).