The Aztecs left archaeologists and historians with a plethora of source material to interpret. The culture actively depicted daily rituals of daily life - from symbolic depictions to hieroglyphic writing. Numerous codexes, which are image-based artifacts left behind by the Aztecs, depict death and mortuary procedures of different types. Thus, the existence of "the death cult" that is characteristically attributed to Aztec culture. While a few historians choose to dispute this idea of death as a religious cult, many agree that a veneration of death was deeply embedded in Aztec culture and tradition through carefully choreographed rites and rituals.
Enjoy images of the following codexes and relish the fact that in Aztec culture, it's not your behaviour during life that impacted where your soul went, but the way you died and why you died that would direct your afterlife. So that's something.
Death of a Lord:

Death of a Merchant:

Ritual of Tititl:
.For more information, codexes, and an explanation of what is going on in these funky ass codexes above, check out this article by David Iguaz from the Institute of Archaeology, University College London.
Signing off!