One of the super-mutants killed Ian with a flamethrower on 13th February, though the Vault Dweller was able to find the water chip in Vault 12, underneath Necropolis. The Vault Dweller then reached Necropolis, a city inhabited by ghouls and super-mutants. On 17th January, 2162, the Vault Dweller negotiated with some Water Merchants to deliver water to Vault 13 to buy the vault some more time. The Vault Dweller traveled to the Hub and found it to be a desolate place. Not much is known about what exactly he did in Junktown, only that he recruited Dogmeat, a dog that he grew affectionate towards, on 30th December and that he 'learned the most important rule of all: doing a good thing sometimes means being a very bad person.' Unfortunately, when Vault Dweller reached Vault 15, the entire vault was destroyed and the control room that would've held the water chip was buried underneath rocks.

He recruited Ian for help before leaving Shady Sands to continue to Vault 15. He helped fight off radscorpions that were terrorizing Shady Sands and saved Tandi, the daughter of Aradesh, from the Khan raiders, killing off the group of raiders in the process. On 15th December, 2161, the Vault Dweller found a settlement called Shady Sands, which was led by Aradesh. The Vault Dweller's straw was picked and he left the vault to find the water chip the next day with clues that a water chip could be found Vault 15. On 4th December, 2161, Jacoren, the overseer, gathered healthy individuals from a certain age range, including the Vault Dweller, and drew straws to pick one of them. In 2161, the water purification chip for the vault broke.

Not much more about the Vault Dweller's life in the vault is known except that the Vault Dweller considered it a good life. He was raised by the community and a robot in said vault for a lot of his life. The Vault Dweller was born in 2141 in a nursery of Vault-Tec Vault 13.

Fallout 1 super mutant invasion