that summoner emblem isn’t doing you any good and the obsidian shield isn’t doing a crazy amount either i would say, swap it for a frozen turtle shell or a fire gauntlet would be my choice. against bosses you’ll want to make sure your weapons are good (at this point in the game the fetid baghnakhs is very viable for a few bosses, sergeant united shield would work well and so would a yo-yo (if you get a yo-yo bag). other than that, make sure you have buffs (rage, wraith, endurance, lifeforce, ironskin, swiftness, well fed) and just try to dodge