Borderlands 3 Eridium Chest Guide: How Do You Unlock Them?

There are a lot of chests in Borderlands 3. You'll want to open as many as you can as each typically contains an assortment of loot, ammo, and health. There are, however, a few chests in Borderlands 3 that just cannot be opened from the start of the campaign. Many of them are tied to certain quests-...