A Vault For My VaultG 50

A Vault For My Vault G50:
Collect 10,000 Caps

This achievement just requires you to acquire 10,000 caps. Caps can be acquired a number of ways, from rushing rooms to completing quests and sending dwellers out to explore the wastelands. The Mysterious Stranger is also a good source of caps as he visits the vault fairly often and can be distinguished by his unique sound that plays when he shows up and his light brown overcoat, you just have to find him in your vault. You might also want to complete the quest “Nabbed from Nuka World” as soon as you can, since doing so will unlock a random event where the characters Bottle and Cappy will show up to your vault. These two characters will walk around your vault and when they start dancing and playing music, if you click on them in time, they will give you some bottle caps, and Bottle has a chance of giving you some Nuka Quantum, too.