While Acheron is already strong in her base form, she becomes even more powerful with more investment – specifically, once you get her signature Light Cone and her E2. Acheron’s signature Light Cone ...

Acheron will still be able to benefit from the ATK increase. If, however, the player has E2 Acheron, then it is possible to reduce the number of Nihility characters on the team by 1. Welt ...