Therosaean Bulwark

You take up a shield in the name of your allies, vowing to protect them at the cost of your life.

Immovable

Beginning when you choose this archetype at 3rd level if you are forced to move in any way (other than teleportation) you may reduce the distance that you are moved equal to your fighter level multiplied by 3. In addition to this you have advantage on all saving throws made to avoid the prone condition and you gain resistance to ranged damage from nonmagical attacks.

Improved shield bash

1. when dual wielding with a shield and a martial weapon you can use a bonus action to attack using your shield, determined by the table below

   shield bash dmg - shield stats + half fighter level (rounded up)

light shields

2d4

medium shields

1d6+3

heavy shields

1d8+4

adamantine

1d12+4 in addition to the weight

this feature is limited to twice per long rest. Additionally, you may only use this feature once per turn

Antagonistic Bastion

When intercepting an attack with protection fighting, you force the creature that made the attack to shift its focus to you for the next 5 turns. Additionally, Increase the range of protection fighting to 10 feet.

Living obstruction

you count as an area of cover that can block line of sight or grant AC bonuses to creatures behind you whilst wearing a shield.

Aggressive Posture

When using protection fighting, in addition to imposing disadvantage, roll a strength check contested by the enemy's dexterity check, if you succeed, prevent the enemy from using any further attacks for the remainder of their turn (e.g. flurry of blows)

experienced defence

starting at 10th level, you gain resistance to any 1 type of damage from the options below.

bludgeoning

resist bludgeoning damage

piercing

resistant to piercing damage

slashing

resist slashing damage

Rallying Protection

Creatures within 5 feet of you can roll a d100 to duck behind you. taking a percent of the damage they would take based on their roll, and passing off the rest to you.