Once Borderlands 3 players have gotten lucky enough to get a Diamond Key, they can access the Diamond Armory on Sanctuary 3. Crates can also contain Diamond Keys, though they are extremely rare - ensuring that players will need to keep unlocking crate rewards to get one. These crates can contain several items, including a random piece of gear, Eridium, a Vault Card cosmetic, or a Vault Card Key, with the Key allowing players to choose any cosmetic or weapon from the card to unlock. As players progress, the new bar at the bottom of the screen will fill up, providing access to a Vault Card Crate once filled. This can be done by playing any mission and killing any enemy, though daily and weekly challenges will also be available via the Vault Cards. After activating it, players will see a new XP bar added to the bottom of their screen.įrom there, Borderlands 3 fans simply need to level up and earn XP. While there will eventually be three Vault Cards added to the game, only one is available now, with the current card called Fallen Heroes. One of the big Director’s Cut additions is the Vault Card mechanic, which is essentially a new battle pass mechanic for players to work through.