One thing about Iron Lung that I have got to give a shout out to is how immense they made the pinhole god feel.
So much medias make their gods either too human or too easy to understand, less like gods and more immortal players with powerful abilities. It's so easy to talk back to them, to understand them, to behold them. Their jobs are also so one note for easier world building. Usually, there isn't much to chew on.
The pinhole god isn't like that at all. You feel its weight in every scene he's in. We only see its eye throughout the movie and that enough helped us understand the kind of eldritch nightmare Simon is dealing with. All it has to do is look and reality bends to its will, whether it wants it to or not.
(Sidenote but I'm also obsessed with how the pinhole god treats humans. It reminds me of the story on tumblr about self written metaphors where someone's mom kept taking the sunflower from the sun cause she wants it to brighten the room and the sunflower died out as a result. Or all those times where someone adopts a pet but the enclosure was too small so the animal went ballistic.
The pinhole god loves humans so it takes them to himself. They want to be together so it makes the eel. They want a tree and Simon wants to live so it makes both come true. It gives them what they want. They keep dying anyway.)