The Aztecs is just great. Easily one of the best stories. The best thing about it is chief villain Tloxtl. I've probably spelled that wrong. But if he can't be bothered having a proper name, I don't see why I should waste time looking it up. Tloxtl. Live with it.
Tloxtl is mad, and spends a lot of time shouting into the camera, which is bad etiquette, especially in Aztec times. I say he's the villain. Actually, he's the only one of the Aztecs who correctly works out that the TARDIS crew are a bunch of liars and not, as they have claimed, reincarnated gods.