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Arm Thyself is a location-based challenge in Captain Scarlett and Her Pirate's Booty. To perform this challenge in Washburne Refinery, it is required to enter the hidden chest room. It is worth 4 Badass Rank.


After defeating H3RL-E in the DLC story line, the objective marker will prompt players to jump down a hole back to the start of the Refinery, but if one jumps over the hole, then the roller wall will rise and reveal the room.