Well, I finished this movie last night.
Aside from that frisky jaguar chewing off that nasty Aztec warrior's face, the violence really did not seem very extreme to me. "The Bludgeoning of the Christ" was definitely far worse and gruesome.
I hope this does not mean I am some sort of desensitized psychopathic killer or anything.
My opinion of the movie? Probably a three-star movie (out of four). Well-done, good acting, nice sound and visual imagery... but the story was a little flat and simplistic, and the ending left something to be desired... it felt like a "Darn, I guess we should just end it here...?" denouement. Just not as much driving purpose/passion to it.