Note: Unfortunately, I have not caught up on the manga, therefore my review for the story may be a little biased. The movie seems to have a decent story continuing from the previous movie, and ends on what seems to be a fairly standard cliffhanger for this movie. The art quality seemed to be a little low for this franchise(Fate) compared to Heaven's feel. I was a bit annoyed by the 3D blender physics used for some scenes as they felt a bit "off" from the general art style of the movie. Audio-wise, it's in-line with the Prisma illya franchise and doesn't use the more "weighty" soundthat HF used.
There was quite a bit of backstory and development (hence the name of the movie) and it was fairly easy to follow through the story.
Overall, the experience was pretty good but being spoiled from the Heaven's Feel series seems to have increased my expectations for this movie a bit lowering my overall rating for this movie.