Feels like part 2 to their 2010 s/t album (which I would highly recommend checking out). One of my favorite releases of 2013, so far.
The sub-genre Agrimonia falls into is hard to pin down, but crust/sludge (blackened sludge?)/post-metal is what I think describes them best. The music is full of dark and sludgy riffs with intermittent ambient goodness. Christina has some of the best harsh vocals by a female I've ever heard.
Favorite track: The Battle Fought.