Spamming that Astora Greatsword weapon skill can do you wonders.

Dark Souls 3 - watch a dude cheese Abyss Watchers with Astora Greatsword

The Astora Greatsword in Dark Souls 3 features a very unique weapon skill for a sword. The move allows you continue thrusting towards an opponent, hitting them multiple times and stun-locking them in the process.

In the video below, YouTube user Phi6er uses the sword against The Abyss Watchers, one of the game's earlier bosses, without taking any damage.

He even edited in the Call of Duty hit confirmation sound and graphic to highlight the hits. Take a look: