Brilliant! Absolutely loved it, to no surprise. 
 I would say 5 stars, but for me some of the vulgarity is unnecessarily over the top (one character with a large scrotum in particular). I understand it's the edgy style, but for me it takes away from the atmosphere. It's my only complaint, and honestly it's very minor. 
 *not so patiently waits for volume 3 to be returned to my library so I can get it*