Dimachaerus

A tall human male steps out into the arena, barndishing two swords. He is surrounded by enemies. But at the end of the battle, he is the only one standing. 

A stocky dwarven warrior holds two axes aloft, as he charges the enemy, cutting them down where they stand.

Many do not survive the pit of the coliseum, fewer so are those who master the art of fighting with two weapons simultaneously. Many who learn to fight like this become adventurers or soldiers, but some even become warlords and demigods.

Ambidextrous Strength

Beginning when you choose this archetype at 3rd level, you can wield any one-handed weapon without the heavy property. Also, whenever you use the duel wielding bonus action to attack with your offhand weapon you treat it as a full attack action.

Duel Defiance

Starting at 7th level, you can defend and attack as a reaction to being attacked within the range of your weapons. Roll damage with each weapon, subtract one total from the damage taken (minimum of 1) and apply the other roll as damage to the enemy. You can use this abitity once per short rest.

Unwavering Lunge

At 10th level, when you attack an enemy within 5 feet of you with both your attack action and bonus action dual wield, the enemy cannot take a reaction until its next turn.

Superior Critical

Starting at 15th level, your weapon attacks score a critical hit on a roll of 18–20.

Enhanced Action Surge

At 18th level, when you activate your action surge ability you also regain your bonus action.