Good vs Evil

Some one asked me today if the movie was basically a good vs evil story...yes...and no...it is GVE, but on several levels. First off, the people in the story are plauged by the GARUM. He is the large beast that moves about the forest and is killing the hunters, beggars and village dwellers. He is not evil. He has been driven mad by blindness and the curse of a long life. He is bad, however, and must be destroyed. The DRIFTERS are evil...I mean, come on...they're demons. They are attempting to stir things up and eventually use the GARUM to wipe out the humans. Lilly is there as a wall between the DRIFTERS and the humans.