I just finished watching movie 3 and I swear I don't understand a gad damn thing from this movie, almost nothing makes sense anymore. The dialogue and actions and the story and everything else is so jumbled up it's impossible to know what the fuck is going on. I am not sure if the subs I was having were just not up to the mark or if the movie really is written like this but either I did not have a good time watching this.
If someone like me who has watched most of fate doesn't get it I would like to see a new person trying to figure out what is happening in this movie. Hell at the end there was a small but unignoreable part which you'd have to watch Kara no Kyoukai movie 5 to even understand what happened and that is something I refuse to consider good story writing.
However the fight animation is still the literal pinnacle of japenese animation and the art and music are still up to the mark you'd expect.
Story wise this is easily the weakest route and I think if I post this elsewhere I'm going to get "read the vn" comments so I won't bother.
UBW is by far the best of the 3 routes with both the animation and the story being fucking stellar.
Heavens feel is still good for the first 2 movies and the Fate route is kinda lame at times but a solid adaptation which is still watchable.
All three routes still do not reach the heights of Fate/zero which just speaks to how good F/Z was.