I enjoyed the context more than the story. It’s only one scene, and the murders happen off camera. The narration isn’t that exciting. But I like seeing where Cassandra comes from, the history of violence that begins with Atreus, and the nature of the phrophecies.
The story is sort of nonsensical. Imagine a musical where instead of silly and building into song, they’re tragic, devolve into song, and then they start murdering each other. It’s musical melodrama.