Ability scores

Dexterity remains the main attack and defense ability. Charisma is the archetype's important secondary score because it improves initiative through Rakish Audacity and supports Panache and social Expertise.

Weapons and Sneak Attack

A finesse melee weapon such as a rapier fits the subclass because Rakish Audacity's special Sneak Attack route is built around being within 5 feet of the target. A ranged weapon remains useful when melee positioning is unsafe or the duel conditions cannot be established.

Action economy

Fight like a mobile duelist. Move into melee, make a finesse attack, and use Fancy Footwork to leave the target without needing Disengage against that creature. Preserve the bonus action for Dash, Hide, Panache or another option instead of automatically spending it to escape.

Skills and Expertise

Persuasion has direct value through Panache and is an excellent Expertise candidate. Acrobatics fits the agile-duelist theme and later Elegant Maneuver, while Stealth and Perception remain strong general Rogue choices.

Common mistake

The common mistake is assuming a Swashbuckler must stand alone to use Sneak Attack at all. Rakish Audacity is only an additional qualification route. The normal Rogue methods still work when allies are nearby, so crowded fights do not switch Sneak Attack off automatically.