How did one get to the afterlife in Egyptian civilization?

Answer 1

They asked the gods for eternal life.

What the Egyptians did in their natural life was taken into account when they reached the gates of Yaru. Anubis, god of the dead, then measured the dead persons heart against the feather of truth. If the heart was lighter, the dead person could go into the afterlife. If not, the heart was eaten.

Answer 2

The Egyptians believed that the soul were perishable and therefore at great risk. The tomb, the process of mummification, rituals and magic spells promoted the well-being, and ensured the preservation, of the dead and the elements of the soul called the Ka, Ba and Ahk. After undertaking the perilous journey through the underworld the deceased would face his day of judgement at the Hall of the Two Truths. The god of the dead, Anubis, would lead the dead to the Hall of Two Truths, where the deceased would stand in front of forty two judges and gods. The deceased was led to a set of scales where his or her heart, containing the deeds of their lifetime, was weighed against the feather of truth, which symbolised Maat the goddess of justice. The fate of the deceased would then be decided - either entrance into the perfect afterlife or to be sent to the Devourer of the Dead - the Great Swallower. If the deceased passed the test the judges in the Hall of the Two Truths pronounced the following divine order