Chapters 8-11 (Normal)

Chapters 8-11 is an achievement/trophy in the first Bayonetta game that is unlocked by completing Chapters 8, 9, 10 and 11 on Normal.

Description
"Complete Chapters 8 through 11 on Normal difficulty"

Guide
Just beat Chapters 8, 9, 10 and 11 on Normal.

Here's the wiki Walkthrough:

Chapter 8

Chapter 9

Chapter 10

Chapter 11