We’ve split up each step into its own section, which can be quickly jumped to via the drop down menu below!

Where are the mercenary vaults? Where to find golden keycards? What is inside mercenary vaults?

Warzone season 4 - Where are the mercenary vaults?

Mercenary vaults are found exclusively on Caldera, inside the bunkers where island transit stations can be found! If you weren’t around during the Season 3: Reloaded update when these were added, they are marked on the map with a round bunker symbol. In addition, since there are these newfound shiny vaults inside, these bunkers are circled in yellow on the map!

Warzone season 4 - Where to find golden keycards?

If you head down to the entrance of one of the vaults, you’ll notice you need a golden keycard to get inside. These are super rare drops from any loot box found across the map, so if you want to get inside you’ll need to do a lot of scavenging first. A few notes - these loot boxes do not need to be near a vault in order to drop a golden keycard. These can drop from literally any loot box on the map, so we recommend playing as you normally would until you luck out and one drops. Also, rarer loot boxes (such as orange legendary chests and scavenger contract chests) have a higher chance to drop these golden keycards, like you’d expect. Once you’ve lucked out and got a golden keycard, you can make your way to a nearby vault very carefully. If you’re playing in a squad, you only need one keycard so move like hell once you’ve got one.

Warzone season 4 - What is inside mercenary vaults?

Once you’ve made it at the entrance of a mercenary vault and waited as the door opens veeeery slowly, you’ll be rewarded with a vast backroom filled with numerous legendary chests. Perks, self revive kits, legendary weapons, armour satchels, gas masks, and loads of money are your reward for going to all that effort. As a solo player it’s far more than you’ll ever need, but as a squad it’s enough to gear out you and your four squad mates with brilliant guns and equipment. It’s the perfect way to set up a win. For more Warzone Season 4 guide content, check out our Warzone season 4 meta loadouts page!

Call of Duty  Warzone Season 4   How to open a mercenary vault and find golden keycards - 56Call of Duty  Warzone Season 4   How to open a mercenary vault and find golden keycards - 14Call of Duty  Warzone Season 4   How to open a mercenary vault and find golden keycards - 37Call of Duty  Warzone Season 4   How to open a mercenary vault and find golden keycards - 93