Call of Duty: Black Ops 6 Zombies is built around the collection (and spending) of Essence, which are the "points" that serve as currency for purchasing weapons, ammo, perks, and pack-a-punch upgrades around the map.

To open the vault in Liberty Falls in Black Ops 6 you need a six-digit combination code. This code is divided into three parts which are located in different areas of the map and these are definitely very easy to get to.