>>717511181
Optional bosses to the best of my knowledge
Chapter 1
Gluttonous Monstrosity - Lu Hongliu
Tang Palace Maid 2
Chapter 2
General of the North - Ai Nengqi
Chapter 3
Bo Sorcerer
Chapter 4
Monstrous Toddler - Bai Kru
Nightmare Demon
HongLan V2
Bo Magus
Chapter 5
Eternal Glory - Zhao Yun
Demon of Obsession

I went through a list of the 24 bosses and those are the ones you can skip/miss, the list also listed the South general boss (Lightning sword and shotgun boss in chapter 3) as optional, but i have no idea how you could skip him.