Bulwark

The martial archetype of the Bulwark is followed by those who exhibit true finesse and power with a shield. Bulwarks specialize in defensive and tactical maneuvers in combat, relying on a shield, and garnering more power from their shield than typical fighters.

Bastion Defence Starting when you adopt this martial archetype at 3rd level, you count as total cover for creatures of your choice that are Medium or smaller. You must be wielding a shield to gain this benefit.

Shield Bash Also at 3rd level, you are a master of bashing with your shield. You are proficient with improvised attacks made with shields, and your shield attacks deal bludgeoning damage equal to 1d8 + your Strength modifier. Additionally, you can don or doff a shield as part of an attack made with a shield.

Staunch Warrior Starting at 7th level, you can reliably stop harmful effects with your shield. While you are wielding a shield, you have advantage with all Strength saving throws against effects that you can see.

Stampede Beginning at 10th level, you can use a bonus action on your turn to attempt to shove a creature within 5 feet of you. You can use this feature a number of times equal to your Constitution modifier (minimum of once), and you regain all expended uses of it when you finish a short or long rest.

Peripheral Ward At 15th level, you gain the benefits of wielding a shield even if you are carrying it on your back, side, or other place on your body.