Two weapon fighter

These fine warriors have perfected the art of using two weapons in combat. This fighter excels at both defense and offense.

Ambidextrous

When you choose this archetype at 3rd level, your two-weapon fighting can be part of your action. When you do so it cannot also be used as a bonus action.

Additionally, you gain proficiency in Sleight of Hand.

Defense is the best defense

Starting at 7th level, you can use your bonus action to take the dodge action if you do not attack with your offhand. You can do so a number of times equal to your proficiency bonus until your next short or long rest.

These blades are made for hitting

Starting at 10th level, you may make two opportunity attacks per round. This cannot be combined with a reaction other than an opportunity attack.

Flurry of steel

At 15th level, you gain the ability to make two attacks as your bonus action instead of one. You can do so even if you did not take the attack action.

Parry

At 18th level, you become so skilled with your weapons that they can be used for defense as effectively as offense. When hit by an attack roll, you can use your reaction to add 5 to your armor class for the remainder of your attacker's turn.