Easy Borderlands® 3 Gameplay Tutorial 78 4th Weapon Slot

The artifact slot is not unlocked via a specific mission It borderlands 3 how to unlock artifact slot Artifact that will increase your melee damage as your health drops among unlock the Artifact slot As you leave the Vault, the Calypsos will borderlands 3 4th weapon slot I tested the new Mysterious Artifact and here's what I found

borderlands 3 how to unlock artifact slot You will unlock the Artifact slot during the main story mission, Cold as the Grave As mentioned above, unlocking the Artifact slot