Alter System
This system is unlocked when completing the main story of any given chapter and once you unlock her in hardcore mode. This allows you to use a second character that uses their own attack style and move set. Granting a different skillset to master.
Wrath's Alter "Hope"
Hope is a human, she is one of the two human soldiers who mysteriously wound up after an unknown event in the Human Realm. Hope features excellent multi-hit potential, great healing, and an inner demon that can conquer all.
https://www.youtube.com/watch?v=N024RW5JhUI