Multiplayer heroes must grow in power if they wish to start/join a game on the harder difficulties. Excluding a certain trick that requires an already leveled multiplayer hero, Normal difficulty is the only difficulty accessible in the original game if the hero is in singleplayer mode. While the original game's higher difficulties could only be experienced online outside of cheating, Hellfire allowed higher difficulties in singleplayer games.Ĭharacters created in the original Diablo start in the Normal difficulty mode. The original Diablo and its non-canon expansion, Diablo: Hellfire, have three difficulty levels.