Blood Flame Aura Build (Elden Ring)

Demonstration of the build, if the game is not given to you, you are welcome.
The essence is very simple, two spells, or rather prayers - Blade of bloody flame and Deadly sin. If you hold a weapon enchanted with Bloodfire, the fire aura from the Deadly Sin starts bleeding. It remains only to hide behind a shield with an activated barrier and wait until any boss burns down.
Barrier on any shield with Block Boost above 65 allows you to deflect any attacks without wasting stamina. Naturally, a shield is needed with maximum resists when blocking, 100% on physical. damage.
https://eldenring.wiki.fextralife.com/Bloodflame+Blade
https://eldenring.wiki.fextralife.com/Fire's+Deadly+Sin
https://eldenring.wiki.fextralife.com/Ash+of+War: +Barricade+Shield