Unlock the Armory is an unmarked quest in Fallout.
Although Vault 13 has used up most of its supply of tools and weapons in failed attempts at contacting the surface, there is still enough remaining to make a difference for the Vault Dweller.
- The player needs to have 6 Intelligence and a good Speech skill, then speak to the Vault 13 security officer and say that they require more ammunition.
- Then the player has ask about who has access, then follow it up by stating that only people who need it have access, and finally stating that they have need of it.
- If the Speech check is successful, the officer will then open the security door.
Inside the armory: