Vault 81 Tour

Vault 81 Tour is a miscellaneous quest in Fallout 4, where the player is offered a tour of Vault 81 by child resident Austin Engill.

Detailed walkthrough
On the Sole Survivor's first interaction with Austin Engill, he will offer to take the player character on a tour of the Vault for a price of 5 caps or for free if the player character successfully passes a Charisma check. Austin will then proceed to show the main rooms of the Vault to the Sole Survivor. Once the tour is completed, the player character will receive 75 experience points.