Dual Master

You have honed your skills with wielding two weapons to become unmatched by any, learning to use them for offense, and defense as well. Doing so, you must be aware of all your surroundings at all time and quick to strike, parry, or counter an attack. 

Dual Wield Mastery

When you choose Dual Wield Master as your martial achetype, your mastery of wielding two weapons is unmatched. When wielding a separate melee weapon in each hand, choose one of the following Strikes:

You gain another Strike at Fighter level 7, 10, 15, and 18

Counter Strike

Your mastery of wielding two weapons is unmatched. When wielding a separate melee weapon in each hand, anytime a creature misses an attack targeting you, if the target is within range of your attack, you may make a single melee weapon attack to that creature.

Deadly Strikes

Your mastery of wielding two weapons is unmatched. When wielding a separate melee weapon in each hand, before you make a melee attack with your weapons, you may take a -5 penalty to the attack roll. If the attack hits, you add +10 to the attack's damage.

Defensive Strikes

Your mastery of wielding two weapons is unmatched. When wielding a separate melee weapon in each hand, gain +1 AC.

Opportunity Strike

Your mastery of wielding two weapons is unmatched. When wielding a separate melee weapon in each hand, if the creature you are targeting, within melee range, has taken damage from a creature within 5ft of the target, and is still there, since your last turn, gain advantage on your attack rolls against that target.

Precision Strike

Your mastery of wielding two weapons is unmatched. When wielding a separate melee weapon in each hand, gain +2 to melee weapon attack rolls.

Quick Strikes

Your mastery of wielding two weapons is unmatched. When wielding a separate melee weapon in each hand and attacking with your offhand weapon as a bonus action, you may make a second attack.

Natural Athlete

When you reach 7th level of fighter, you gain proficiency in Athletics and Acrobatics. If you have proficiency in one, or both of these, you may choose one skill that requires Strength or Dexterity to become proficient.

Things are Going Your Way

When you reach 10th level as a Fighter, sometimes things are just going your way. When wielding a separate melee weapon in each hand and you critically strike an enemy with a melee weapon attack, you may make a single melee weapon attack to the same target for free.

This may only happen once per turn.

   

Eager to Fight

When you reach 15th level of Fighter and when wielding a separate melee weapon in each hand and you take the Dash Action, finishing your movement within melee range of a creature, you may double the amount of attacks made with your bonus action.

You may do this once per short rest or long rest.

Whirlwind

At 18th level, you have learned to control surge with even more precision. When you use Action Surge, you may use an additional bonus action as well.