Your Fourth Weapon Slot will unlock after completing the first vault mission in the main story, Beneath the Meridian, which is the 10th main mission.
These unlocks are tied to completing story quests, so here's when you can expect to unlock them.
Your Fourth Weapon Slot will unlock after completing the first vault mission in the main story, Beneath the Meridian, which is the 10th main mission.
These unlocks are tied to completing story quests, so here's when you can expect to unlock them.
