You adopt a particular style of fighting as your specialty. Choose one of the following options that best suits your nature:
Fisticuffs
Your unarmed strike damage becomes 1d6 + STR, and you may add your proficiency bonus to your attack roll.
Great Weapon Fighting
When you roll a 1 or 2 on a damage die for an attack you make with a melee weapon that you are wielding with two hands, you can reroll the die and must use the new roll, even if the new roll is a 1 or a 2. The weapon must have the two-handed or versatile property for you to gain this benefit.
Two-Weapon Fighting
When you engage in two-weapon fighting, you can add your ability modifier to the damage of the second attack.
Obstruction
Before the outcome of the roll is determined, you can use your reaction to gain a +2 bonus to your Armor Class against that attack, potentially causing the attack to miss. You must have a weapon with the heavy property or shield in your hand to use this.
Protection
When a creature you can see attacks a target other than you that is within 5 feet of you, you can use your reaction to impose disadvantage on the attack roll. You must be wielding a shield.
Multiclass Compatability: This feature may only be taken in addition to Fighting Style features of other classes after tier 5. And you may not select the same fighting style twice.