To start, there are actually three Keycards that can be used to open CoD: Warzone’s Nakatomi Plaza Vault, and while one is enough to get a player inside, there are incentives for acquiring all of them. More specifically, there are three Deposit Boxes in the Vault, and each one is accessed with a different Keycard. These Boxes contain things like Advanced UAVs and Contraband Contracts, and more details on how the Keycards and Deposit Boxes correspond can be found in what follows.
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Call of Duty: Warzone - How to Open Nakatomi Plaza Vault
Vault Keycard 1 Location
In order to obtain Vault Keycard 1, players simply need to complete one of the Unfinished Business contracts that are found outside of Nakatomi Plaza. These function very much like Scavenger Contracts in Warzone, sending fans to open crates inside of the tower. Upon looting the third crate, a player will receive Keycard 1, and the Deposit Box that it opens grants a specialist bonus.
Vault Keycard 2 Location
The second Vault Keycard comes from participating in an event that occurs on the roof of Nakatomi Plaza. This event revolves around disarming C4, and the Keycard will appear when the final one is diffused. Notably, Call of Duty: Warzone’s Cold-Blooded perk can be useful for evading the helicopter that is found at this location, and Vault Keycard 2 opens a Deposit Box that rewards an Advanced UAV.
Vault Keycard 3 Location
The final Keycard is a reward for completing an event in the garage that is situated under Naktomi Plaza. This location is accessed by descending several flights of concrete stairs outside of the building, and the event, which centers around eliminating waves of enemies, is initiated from the back of a white van parked on P2. With Vault Keycard 3 in hand, players will be able to open a Vault Deposit Box the contains one of Warzone’s Contraband Contracts, and it can be used to unlock a Weapon Blueprint.
Call of Duty: Warzone is available now on PC, PS4, PS5, Xbox One, and Xbox Series X.
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