After the title, there's a section laying the foundation and describing the big picture. It illustrates through the interactions of the young soldier Birmingham with his family and companions that their world is often afflicted by the strikes of the Demonic Tide, and the main plotline of the movie is clearly about resisting the Demonic Tide.
As a professor, Amitage felt that the most impressive aspect here was the exceptional performance of the actors.
He taught at the film academy and had been to many film sets. He knew that the most troublesome part of filming wasn't the performance of the star actors, but rather the setup of the lighting and the extras.