Deulist

While some fighters focus on tactics in battle, or dip their toes into battle, Deulist spend their time mastering a more refined form of combat. Deulists have studied and mastered complex forms and techniques using light and quick weapons. They much prefer settling their differences in honorary and controlled battles to the death, but will attempt to single out their foes in combat to gain advantage. 

Finesse Weapon Specialist

Beginning when you choose this archetype at 3rd level, you can use two weapon fighting with any fineness weapons, as long as one of the weapons you're wielding has a d4 damage die. Also, when you roll a critical hit on an attack with a finesse weapon, the number of damage dice you roll is tripled instead of doubled. 

Skilled Defense

Starting at 7th level, while you are wearing light or no armor, are not wielding a Shield, and are wielding at least one finesse weapon, your AC equals 10 + your Dexterity Modifier + your Intelligence modifier. 

Quick Reactions

At 10th level, when an creature comes within 5 feet of you, you may use your reaction to make an opportunity attack if the creature has no allies within 5 feet of it. You can also use up to two reactions each round. 

Superior Technique

When you would otherwise qualify to make an offhand attack with a bonus action, you can instead use your bonus action to make an extra attack with either weapon you are wielding. 

Pinpoint Accuracy

At 18th level, when you attack with a finesse weapon, your opponents do not gain benefits from their Armor when calculating their AC. This does not affect creatures with Natural Armor.