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The CHALLENGER is built on a PROTECTOR frame subjected to hundreds of additional tests and quality assurance checks, minimizing performance quirks that negatively impact competitive performance.
— Helmet description
Mjolnir Powered Assault Armor/Challenger is a variant of Mjolnir Powered Assault Armor featured in Halo 5: Guardians. It is optimized for high performance in War Games and is built on the Mjolnir/Protector frame.
- The Challenger was available for a limited time from the 20th to 21 March in a free REQ pack, which contained the complete Challenger armor set and a Halo World Championship emblem.