The artifact slot is not unlocked via a specific mission It

Here's how to unlock weapon slots which will let you carry more weapons in Borderlands 3

Borderlands 3_How to get the Artifacts slots unlock ; Borderlands 3 How to get to Mayhem Level

borderlands 3 unlock artifact slot Opening a golden chest in Borderlands 3 #borderlands3 #borderlands #goldenchest #chest #gamble How Do You Unlock The Artifact Slot and

borderlands 3 artifact slot Your Class Mod Slot will unlock after helping Rhys out on Promethea and defeating the boss and completing the quest 'Hostile Takeover', which is