Charisma governs communication and influence. Persuasion convinces others, Deception lies convincingly, Intimidation uses fear, and Performance entertains or distracts. These skills shape social encounters just as attack rolls shape combat.
NPC interaction is where roleplay thrives. How you speak matters just as much as what you roll.
Different NPCs require different approaches. Nobles expect respect, merchants respond to leverage, criminals fear intimidation, and common folk value kindness. Physical actions can also influence NPCs, such as helping them lift something heavy or subtly stealing an item.