Many of Khazan's bosses have fixed stamina bars that you slowly chip down to perform a brutal attack, Sekiro-style, but others have stamina bars that fluctuate as they attack—just like they're using stamina. Since skills don't consume stamina, you use them to supplement attacking and defending like little cheats, https://homeworld317161.blogofchange.com/34580681/the-first-berserker-khazan-uma-visão-geral