Musicianship is top notch and the songwriting is strong. If this came out in the eighties the world would have been in awe but since it's 2015, it's much harder to get the attention with this style of music, which is disappointing because these guys are awesome at everything here.
"New Chemical Warfare" is the standout track for me, starts out kind of SOD-ish, hitting hard and heavy instantly with a basic hard riff that makes you want to punch something. There is a lot of hard hitting riffs, tabs of serious technical ability, and this whole release is class A song writing.
In short these guys are raising and old flag and taking over with it. Check 'em out.