Sekiro: Shadows Die Twice – Fountainhead Palace
It’s hard to really pinpoint what makes Fountainhead Palace so annoying. The area itself is fairly large, meaning you’ll have more space to explore (enemies are also generally more spaced out). Until you get electrocuted while in the water, or devoured by the giant carp that is. Trying to properly explore the level is tough enough but it’s made even more trying with all the Okami Warriors, especially those with ranged attacks.