I just finished Styxx for the second time. Acheron is meant to be the destroyer of the world right? He has the power for it (and I think it was part of a prophecy?) but also Nick’s supposed to be the one who destroys the world which is the point of chronicles of Nick. I thought if we know Nick destroys the world why does it keep saying Ash would destroy it then I realised he does.
What happened between Ash and Nick set the course for the destruction of the world. So Ash won’t destroy it himself but as the final fate he triggered the events that would.