I've only got five songs of it so far (damn 56K), but my reactions are sort of mixed.
The guitar solos are as excellent as ever, and in many ways, they've really taken their dissonant riffing style to new heights. Also, they seem to use more layers and counterpoint on this one; a change first hinted at on "Unholy Cult".
However, I'm not certain that it succeeds as a whole at quite the same level that FFG, CTAWB, or UC did. In many ways it seems to be a bit of a mainstream bid that still has some brilliance left; you could say that it's Immolation's "Covenant". The title-track is a huge simplification from their normal fare, although it is somewhat better than it was on the video, thanks to the vastly improved sound quality; "Dead to Me" features some almost mallcore touches that I'm sure that they'll get away with due to their reputation; the chorus of "Our Savior Sleeps" has an almost rockish bounce to it. "Swarm of Terror" and "Challenge the Storm" both seem pretty good, though.
So in short- of the five songs I've heard, one is Immolation's attempt at being accessable that somehow is still decent, although not as good as their previous work; two are potent except for some really stupid ideas that are thrown in and really hurt them; and two are typical Immolation, excellent as always.