God man i was just talking today about how this was one of the best shots in Fnaf history, everything about it including the dialogue is so good, you can feel the despair in William and you captured it amazingly
"The darkest pit of Hell has opened to swallow you whole. So, don't keep the devil waiting, old friend." is still one of the best lines ever written for a game's ending
This really was the perfect ending not only for Fnaf but for William's arc, really hoped UCN would have been the end of him and that Steel Wool would have come up with another antagonist