Gauntlet of Valor Event Week

Gauntlet of Valor is an event week for Call of Duty: Extinction which ran from June 16th to June 20th, 2022. The event week introduces the Gauntlet of Valor, run by Mr. Tachibana and is a challenge mode different from the Extinction maps existing in the game.

Modes
The Gauntlet of Valor is a challenge mode introduced in Call of Duty: Extinction as a limited time mode which consists of several challenges and obstacle courses. Each challenge and obstacle rewards players with exclusive Specialized Weapon Variants.
 * Gauntlet of Valor

There are a total of six encounters; four of which are challenges and two being obstacle courses. Challenges are optional and can be skipped if players cannot complete it or find it too hard to progress while the obstacle courses are straight-forward.
 * Which Grimm is Real? - Unlocks Ravager
 * The Run I: Vindicators - Unlocks Angel's Death
 * Priority: Silence - Unlocks Spectrum
 * The Pools of Death - Unlocks Excavation
 * The Run II: Scorpions - Unlocks Massive Punch-9
 * Rogue Clone - Unlocks Lightning of the God

Specialized Weapon Variants
The event week introduces six new Specialized Weapon Variants that can only be unlocked within the Gauntlet of Valor's challenges and obstacle courses.
 * Ravager - Legendary
 * Angel's Death - Legendary
 * Spectrum - Legendary
 * Excavation - Legendary
 * Massive Punch-9 - Legendary
 * Lightning of the God - Legendary
 * Longest Winter - Ancient

Trivia

 * The Gauntlet of Valor is inspired and based on Destiny 2's Leviathan Raid which consists of various encounters and challenges.
 * The Specialized Weapon Variant Longest Winter is unlocked only if players have completed all four Challenges and both Obstacle Courses.