The Priestess boss in Saros demands a specific rhythm to defeat. You'll need to punch tuning forks at precise moments, which means timing matters more than raw damage output. The attack pattern is predictable once you recognize it, but the projectile spam makes it easy to panic.
Here's the strategy: Wait for the Priestess to summon tuning forks. Strike them in sequence. Each hit weakens her defenses. Between fork phases, she floods the arena with projectiles. Don't panic dodge randomly. Instead, memorize the gaps in her fire patterns and move through them deliberately. Rolling backward works better than rolling sideways, since most projectiles travel forward.
Phase two escalates the difficulty. More forks appear simultaneously, and projectiles move faster. The key is conserving your stamina for dodges rather than wasting it on clumsy attacks. Light attacks on the forks drain less stamina than heavy ones, so resist the urge to go aggressive.
If you're stuck, upgrading your shield actually helps here. You can block projectiles to buy time while waiting for the next fork phase. It's unconventional for this boss, but blocking beats dodging when the projectile density peaks.
The Priestess falls once you hit all the required forks in her final phase. She telegraphs this moment clearly. Stay patient. This fight rewards discipline over heroics.