General
Character limit
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Diablo 4 is expected to have 10 character slots. This is the same number that Diablo 3 launched with.
Core Stats
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Classes benefit from the four attribute types different. There's multiple ways to increase attribute points.
Cutscenes
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Real-time cutscenes will feature your unique character's look inside Blizzard's famous cinematics.
Difficulty tiers
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There's at least three World Tier difficulties, each offering progressively harder gameplay.
Excluded features
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While Diablo 4 has tons of new features, it won't have everything, like fishing and player housing.
Max level
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The max character level in Diablo 4 is 100. Players invest in skills from 0-50, and the Paragon Board from 51-100.
Progress tracking
Challenges
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Challenges are the equivalent to Achievements from Diablo 3. Players get a unique title for each Challenge.
Leaderboards
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In addition to a "top players" list, Diablo 4 will feature a multitude of fun and challenging leaderboards.
Renown System
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A system to benefit players for thoroughly exploring a region. Benefits include skill points.
Season Journey
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The Season Journey gives players new objectives each Season, and rewards them based on level of completion.
Titles
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Titles are rewards for completing Challenges. They have a prefix and suffix, for creating combinations.
Appearance
Armor dye
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Any Armor piece can be dyed. Fabric, leather, and metal materials all react differently under lighting conditions.
Customization
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Characters can be customized more than ever, with different body sizes, eyes, hair, tattoos, and scars.
Transmog
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Transmog allows players to alter an item's look, but keep its stats the same. Salvaging unlocks transmog.
Wardrobe
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Players can customize the look of items using transmog and pigment dyes in the Wardrobe feature.
Detailed & customized characters
Blizzard said that one of its goals with Diablo 4 was to allow each player to create and play the fantasy character that they've always dreamed of, whether that's a big-boned Barbarian with tattoos or a slim-form Necromancer with multiple scars. Diablo 4's character models are extremely detailed, and they'll not only be used in the game, but also in real-time cutscenes. Players can also better track their character's progress, with systems like Challenges (i.e., achievements) and Leaderbards.