A Halo Infinite player figured out a way to access campaign co-op early; however, it's worth noting the process involves a glitch that could potentially break in-game saves. During an August 2021 development update, 343 informed fans that Halo Infinite wouldn't ship with campaign co-op and Forge in tow.
Campaign co-op should go live in the game's Season 2 run of content, with Forge Mode on its heels in Season 3. Unfortunately, another recent update revealed that Season 1 won't end until May
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