A full wiki page for this entity is still being generated. Until then, see the recorded facts below.
Sources — 6 recorded facts, by chapter
Chapter 2
- Achievements reward boxes of varying rarities (Bronze, Silver, Gold, Legendary) for categories like Pet, Adventurer, Apparel, and Weapon.
- They can only be opened from the Awards and Boxes tab of the inventory menu while in a safe zone after completing the tutorial.
Chapter 4
- Boxes come in six quality tiers: Bronze, Silver, Gold, Platinum, Legendary, and Celestial.
- Patrons can send Benefactor Boxes containing the rarest items, including items from the patron's home world like pulse rifles or automated power armor.
Chapter 5
- They can be hoarded but must be opened all at once by tier, cannot be sold or transferred unopened, and never contain outright cursed loot.
- Carl opens ten of them, an unusually large number compared to the typical two or three a crawler brings into the tutorial.