The Hundred-Eyed Daoist | Black Myth Wukong Chapter 4 Final Boss

The true final boss of Chapter 4 is against the Hundred-Eyed Daoist Master, and he's a powerful Yaoguai King indeed with a couple of very nasty tricks. You can find him directly in front of the "Court Of Illumination" Shrine at the end of the Temple Of Yellow Flowers region. The first time you face him, after a cutscene you'll be able to fight him with the help of the Sisters (all giant spiders - sorry again, arachnophobes). If you die, then subsequent attempts will be just a 1v1 against him, but he'll start at slightly lower health to compensate.