Personally, I found it almost disappointing. It was far below the standards of Schlafende Hunde and Auferstehung. The Winterreise EP's covers are vastly superior to anything on Nachtmar

.
I think RIG's voice was way off on a lot of these songs and some of the music is just plain old boring in a way. I love the classical sound and simply cannot get enough of Winterreise, but I'm glad they're going to go back to a more electronic approach. RIG just doesn't have the voice to sing like this for an entire album (and if you've heard him live, you'll wonder whether he has the voice to sing like that at all

).
They're my favourite band, easily, but I have no problems acknowledging that this was a pretty sub-par effort (though the bar is so, so high for Janus).
Die Ruhe Selbst, Anita Spielt Cello and Grabenkrieg are all really nice. Was uns Zerbricht is (still

) fantastic and I quite like the Kadavarstern cover, too.