Not bad for progress of overarching plot, but awkward ecchincest is back.
Very good arc here, all the good supernatural, psychological intrigue, with hardly any of the annoying ecchi aspect. Praise.
Was the Tsubasa Cat arc in Bakemonogatari not sexy enough for you? Here it is again but in lingerie. And I GUESS some more character development with Shinobu.
Too much inexcusable uncomfortable fan-service (read borderline illegal) to make the neat dialogue worth it. It is important to the overarching Monogatari story, so if you're embarking on it, muscle through.
Better, richer, dialogue than in UBW, much more of a Fantasy feel than previous Fate installments, but a solid piece with some outstanding artistic, bone-chilling, and emotional moments.