The following content is mainly intended to help me remember how to complete the final task when I play it next time. It involves too much plot disclosure (but I suspect that players who haven't completed multiple rounds and reached the final conclusion won't be able to understand what I'm writing either).
To complete the final task, you need to level up extensively. And don't forget: Stars smile. Make sure that a single hit deals 16k damage.
Give reactions from the eye of the void. Most of the options can only be accessed after completing his side quests. The further effects are indicated at the end. Among them, +1 is a purple glow, and -1 is a white glow.
To complete the final task, please first enter all -1 values, then re-enter 6 +1 values.
Torgar +1/-1
Drenth +1/-1
Lukka -1
Herald +1
Ethrex/Eroth (Gives the same result) +1
Apothus +1
Nyx +1
Ferro +1
Kanathar +1
Tiadane +1
Me
Echo
Abel
Silas