The achievement titled MEDIC! is one that has been confusing players since Halo Infinite's release. All other achievements seem to be obtainable, while MEDIC! remains locked to a game mode that has not yet been introduced in the game.
How to get the MEDIC! Achievement?
To get the achievement, players must "Revive 3 allies in an Elimination round in a matchmade game." Some players believed that the new game mode Attrition would make the achievement obtainable, as there is a reviving mechanic in the mode. Now that the Cyber Showdown Event has started in Halo Infinite, it is clear that the achievement is still locked. The Community Support & Engagement Coordinator at 343 Industries confirmed on Twitter that the achievement was specific to the Elimination game mode which has yet to be introduced.
When will Elimination come to Halo Infinite Multiplayer?
While we currently have no information on when the Elimination game mode will release in Halo Infinite Multiplayer we can expect it to come eventually. 343 Industries has the next few weeks of events in Halo Infinite planned out. The Cyber Showdown Event will take place until January 31st, 2022 followed by the return of the Fractured: Tenrai Event. With this in mind, Elimination may be a while away and may even be included in the game's second season, expected to arrive in May.
Want to read more about the Cyber Showdown Event in Halo Infinite? Check out How long does the Cyber Showdown Event last in Halo Infinite on Pro Game Guides!