Sinderfury, in the game, sin is the fire that fuels you, and the only way to get it is to hunt down the demons that are filled with it, cut out their black hearts and consume them. However, the demons are not going to just let you go. The world is dark and vast, and what remains of humanity can only lay claim to a tiny corner of it. If you want them to live on, you’ll have to venture into the nightmarish ruins of The World That Was and face whatever lurks there. Demons are bigger than you, stronger than you, and faster than you. But they don’t have anyone to watch their back. Work together to overcome what one Sin Eater cannot do alone.