Well the third part of the installment is enjoyable. It has some weaknesses, but overall I didn't mind watching it.
The Weaknesses: No recognizable angelic names in it (with the exception of Gabriel). The bad guy (Zophael) is a total no-name, so you don't really know how to rank him (powerful/not powerful), which wasn't really a problem in the first part. There you knew that Simon was more powerful than Uziel; that Gabriel could beat Simon's ass; and that Lucifer could smack them all to hell in a handbasket.
Funnily this works to advantage for the movie as you don't really know which side of the factions Zophael and who actually is the good/bad guy until somewhat in the middle of the movie.
The actors aren't all that good (with the exception of Walken, Spano - who brings that charisma back to the angels that was so severely lacking in the second part- and the Coroner who has grown to be one of my favourite characters in the three movies)
Strenghts: The storyline is closed. I won't argue that it's the most coherent storyline, but it at least makes some moderate sense in itself. The musical score has always been one of the big things about the trilogy and they kept it -wisely- unchanged for the most part. This time around we have more funny scenes and even some jabs at the original 'The Prophecy', while not making it campy and keeping all the good bits (fights, heart ripping, supernatural powers etc.). Some of the moves seem very Matrix-like, but that was already the case in 'The Prophecy II', so I don't really know who copied from whom (It just seems so similar: Humans fighting against some overly powerful and nigh unkillable opponents in cool long dark suits). No matter: It's fun to watch. This time we also don't get treated to some candy sweet religious thing in the end, where the main character suddenly becomes a devout Christian - that's a big plus.
Overall, I'd recommend seeing this film. Best if viewed together with the other two or you will not get many of the references.
7/10