Confusion, flashy, messy watch, wouldn't watch it again, and can't recommend unless you're just REALLY into stories about Christianity and the afterlife.
The art has a mixture of feelings from "Kill La Kill", "The Maxx", "Heavy Metal 3000", and "FLCL", even feels like "FLCL" at times. Let's just say this isn't a traditional anime. It was honestly such a grating imagery than I just checked out, but eventually you don't notice how silly the art is, but that's more because the story gets insane.
So not only is this about living people being dragged to Hell, and its a Hell where people can die again, but there's also reincarnation. And I'm not saying there isn't a way to make all this work together, but this movie rushes all of it and none of it pays off. the 7 deadly sins are even represented, and no pay off.
There's a very specific problem, in a story, with characters living forever, god being all powerful: this is all happening at a culmination point where things are "finally" in alignment, but that's all by design. The story is designed to be a confusing mess of spaghetti story. I can respect multi threading, but this is "go to" spaghetti madness.
I could at least respect it as a work of art if it didn't pull a "Wizard of Oz" in the last act, and THEN disprove the disprove....I honestly think the animation choice was less of a choice afterall.