Diablo 4: Campaign Length, Battle Pass, Early Access, Assets, and Time to Beat.

TL;DR
Diablo 4's campaign length is estimated to take about 35 hours to complete for most players, according to the game's director and general manager. The non-linear campaign allows players to venture in any direction they choose, and there will be plenty to do in the postgame section, including Paragon Boards and seasonal content.
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