What volumes of the Campione LN correspond to the anime?
I know you're not here given that you've been away for 8 months but still:

The anime is such a mess...

Episode 1: volume 3

Episode 12: Original

The rest: It goes from volume 1 to volume 6 chapter 5

Notes: The Athena and Voban arcs are almost faithful to to the light novel. Perseus is semi-faithful. Ena has lots and lots of original content.

I read the light novels and saw the anime