Borderlands 1Destroyer Chest

After killing the Destroyer 7 Red Chests spawn.
The Chests from left to right contain:

1. 2x [AR, Shotgun, SMG, or Sniper]
2. 4x [Repeater or Revolver]
3. 4x [Shield or Class Mod]
4. 1x [Eridian] and 1x [Gearbox Legendary]
5. 2x [Legendary Artifacts]
6. 4x [Repeater or Revolver]
7. 2x [AR, Shotgun, SMG, or Sniper]

‍Bug:
By fast traveling to a DLC Map and Save Quitting, you respawn the Chests.
So you can return to the Vault and open all chests repeatedly without fighting the Destroyer.