What was unique about the ancient Egyptians religion?

It was unique in its detailed picture of life after death, a concept that most religions of the time (including Judaism) hardly bothered about; and especially it was unique in the idea that the way in which you had led your life was carefully measured by the gods after your death and then either punished or rewarded. It would take until the emergence of Christianity thousands of years later before another religion took up the idea of punishment or reward in an afterlife for the life you had lived.