Unknown Anime movie??????

There is an Anime movie that I can't remember what it was. I watched it once a few years ago. It had soldiers, clerics, specialists in power armor like suits with big guns that had ejection like rounds that helped them cast spells. They were fighting some kind of demon/mutation. Lots of blood and gore. I don't remember much about it seeing as how it was a long time ago. Any suggestions of what it might could be helpful thank you.