Vault 81 Tour

Vault 81 Tour is a miscellaneous quest in Fallout 4.

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

The quest can be failed if the player moves too far away from Austin during the visit. Additionally, the quest will also fail while conversing with NPCs while on route to different locations in the vault.

If the quest is started late at night, it is possible to become "stuck", as Austin will go to bed without the tour completing. To avoid failing the quest, you may need to wait for him to wake up again.