A fire-resistant power armor prototype developed by the Enclave after the Great War. In October of 2080, a suit of this armor was sent to Vault 51 from the Whitespring bunker, after ZAX 1.3c impersonated Dr. Stanislaus Braun.
While considered a separate model of power armor, the Hellfire prototype in Nuclear Winter is a cosmetic item for the player's power armor. It completely changes the appearance of the power armor it is applied to.
The skin is automatically unlocked after reaching rank 100 in the Nuclear Winter gamemode. The armor is cosmetic only.