When I first heard Engel, it was with some tracks from Absolute Design. That album utilized a sound a little different from Threnody, which is a little different from Blood of Saints. Still, there are similarities.
This album has dubstep elements... I want to say, maybe it's not even so far from their Absolute Design, but might be my untrained ear. While this album might be a sudden surprise to Engel fans, I can find it enjoyable.
So, my advice when approaching this album is to have an open mind. Try not to approach with the attitude that anything dubstep is automatically garbage. I'm certainly not a fan of Skrillex, but I do enjoy this album. The more I listen to it, the more it grows on me.
I'm not sure I'd feel comfortable with Engel going any deeper into dubstepery, but that's another matter. I also do feel the guitar work and instruments have lost a little luster they had in, say, Threnody. Meh, can't win 'em all.