The Man first dies and goes thought the underworld which is filled with beasts and monsters but because he has a book of the dead he can use the magic and spells and other things to help him deal with the monsters which is the first thing you need.
Then the man goes to the Hall of Ma´at who is the goddess of truth and justice
Next the man is judged by 42 god and he has to go to each and every one and say a sin he has not committed Which is where the heart amulet comes in it makes it so his hear does not betray him.
Next the after that the man goes to the weighing of the heart which if his heart weighs less than a feather then he can go forward if it weighs more he will be devoured by a beast.
Ra the sun god takes the man down to Osiris the god of the underworld to get final approval to let him into the afterlife.
Finally the man enters the afterlife and meets his parents but he still has to do work he has to plot a stake of land but he has the help of his shabti doll that was placed in his tomb.