Knife Fighter

Knife Fighters ignore the bigger slower weapons of their comrades for lighter, faster knives. Frequently seen using two knives and a fighting style closely resembling that of a martial artist they are deadly at close range.

Knife Fighting

Beginning when you choose this archetype at 3rd level, you gain the Two-Weapon fighting style, if you don't already have it, as your training with knifes has made you far more deadly with them. 

Two-Handed Defense

While you are wielding a weapon in both hands, you have a +1 bonus to AC as long as you're not wearing heavy armor.

Close Quarters Fighting

Starting at 7th level your experience in close quarters combat has honed your speed and reflexes. Your speed increases by 10 feet and when you are subjected to an effect that allows you to make a Dexterity saving throw to take only half damage, you instead take no damage if you succeed on the saving throw, and only half damage if you fail.

Quick Strike

At 10th level, you've become incredibly fast. Once per turn when you make an attack with a light, one-handed weapon, you can make an additional attack with that weapon as long as your not wearing heavy armor.

Fast Movement

Starting at 15th level, when you use your Action Surge you can move up to twice your movement speed on the same turn.

Hardened fighter

At 18th level, you've gotten so used to taking hits in a fight your body has become much more accustomed to it and you know how to effectivelyhit back. You gain resistance to bludgeoning, piercing, and slashing damage from nonmagical attacks. Additionally when a creature hits you with a melee attack you can make one weapon attack with advantage against them as a reaction.