it's not coming back now
For all of its monstrous intentions it appears that it truly is reaching the end of it's days. Your hate and anger and suffering were not as potent as to allow it to grip hard on life. It's claws are ragged and broken. There is nothing left of it. It has decayed to the point of crumbling into nothingness.
You can walk away now. Allow yourself to forget all that has happened. There are no more monsters hiding. No more faces but one. The final face. Do you dare wait and discover the root of all that ferocity. There is only a little time left before it all returns to the darkness and you do not want to be trapped in here.
To be trapped would end your life as you know it. There would be no part of you left that would crave the light, the joy, the things that your life desires more now that it has in all your years. But you can't go just yet. Curiosity is once more leading you to disaster and again satisfaction is the only thing that will save your life.