Macbeth 2nd half

“Fillet of a fenny snake, in the cauldron boil and bake, Eye of newt and tow of frog, wool of bat and tongue of dog, Adder’s fork and blind-worm’s sting, Lizard’s legs and howlet’s wing, For a charm of powerful touble, like a hell-broth boil and bubble, double toil and trouble, fire burn and cauldron bubble” (William Shakespeare “Macbeth” p, 51). The three witches enter again and they are not up to any good because this passage seems to have spell coming out of it. Macbeth enters and asks the witches to reveal the truth about some questions that he has. They then tell him to watch out for Macduff, “The power of man, for none of women born Shall harm Macbeth” (p.54). And the last thing they said was Macbeth is safe until Birnam Wood moves to Dunsinane Hill because he will go against Macbeth.
Lady Macduff demands why her husband has left. She then tells her son that his father is dead, and when she was told to flee she didn’t want to because she says she’s done nothing wrong. Just then two murderers enter and stab’s Lady Macduff’s son and kills him, and she runs out of the room while the murderers chase her. Macduff is talking to Malcolm in front of King Edward’s palace and he tells him he does not trust Macduff because he maybe working for Macbeth and he left his family in Scotland, and after Macduff cries out “O Scotland, Scotland!(p. 63). Malcolm puts all his suspicion on the side and thinks of Macduff as not an ally. Ross enters and tells Macduff that Macbeth has murdered his wife and child, Macduff gets really angry and seeks revenge on Macbeth.
In the last act a war breaks out and Lady Macbeth dies. During the battle Macbeth is raging with is sword and Macduff is looking for him because he wants to kill Macbeth himself for what he did. They meet in the battle field and they are fighting their swords off. Malcolm retrieves the castle and while walking through Macduff enters with Macbeth’s head in his hand and calls Malcolm the king of Scotland.
Question: How did the fight scene end?
　
I can now see why King James at first didn’t want the play to by shown. This is very real and at their time I can guess that the people have never heard a story like this

William, Shakespeare. Macbeth. New York: Dover Publications, 1993