Prison of the Forsaken

Those who commit the most heinous crimes will be thrown into the Prison of the Abandoned by God. There is no morality here, only interests. If you want to get out, you can only collect soul fragments for God. However, one day an innocent person came to this prison... How can an innocent person atone for his sins? How will he escape from here? Should he become the slag beneath the feet of gods, or become a god-killer, and finally become a new god...