One of the new additions to DOOM Eternal are the 'Master Levels' – brand new challenges designed to be beaten by only the best of the best.
These new levels are different takes of previous levels in the game, and Bethesda recommends that you don't jump into these harder versions of regular encounters until you've cleared the main campaign (and unlocked all your abilities and weapons) at least once.
Honestly, we've tried two of them, and they are brutal. "Master Levels are challenging remixes the campaign missions designed to truly test your mastery," a primer explains once you've beaten the game once, on any difficulty. "New Master Levels are added regularly, so be sure to check back often.
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