It should show Kratos being born, without revealing the father ( to avoid spoilers). It should also reveal Krato's brother, and should show a sparring match between the two, with Kratos winning, to show that Kratos was indeed the better fighter. this part is about 10 minutes long.
Then there is Kratos' teenage years, where begins to discover some of his abilites as a warrior. He meets his future wife during this time too. This part will be 5 minutes long.
Then they should show Kratos' ascent through the Spartan ranks, eventually becoming a captain with thousands of soldiers under his command. They should also show the growing relationship between Kratos and his new lover, their marriage, and their daughter being born. this part is about 20 minutes long.
Kratos then decides to make himself the finest general since Alexander The Great, and begins conquering everything in sight. Kratos' wife realizes her husband may be changing, and tries to tell him to stop. His daughter becomes terrified of her father. Even this does not stop Kratos, and they are forced to sit back and helplessly watch. Here is about a5-minute scene
Then comes the fateful battle with the Barbarians, Kratos and the Barbarian king have a short duel. However, even Kratos' skill cannot match that of the Barbarian King's, and Kratos is quickly defeated, but not killed. His Spartans, however, are not as lucky, as they are being slaughtered by the hundreds.
Kratos realizes this is a battle not even he can win, at least not without some help. He cries out for Ares, the God of War, to help him win this battle. Ares sees Kratos' potential, and desends from Olympus. Kratos surrenders his soul in exchange for great power, and that is when Kratos recieves his Blades of Chaos. The battle takes about 15 minutes.
The Barbarian Army is easily defeated by Ares' divine power, and Kratos kills the barbarian king. This begins the series of conquests that lead the the small Village where Kratos regains his humanity at a great price.
Kratos' army easily massacres the small village, which does not have and soldiers, mostly elderly people and women. Kratos does not realize what he is doing until he busts down the temple door, and kills everyone inside. His last two victims bring him back to his senses, when he sees his wife and child at his feet.
Kratos mourns, when Ares appears, and tells him how powerful he will become now, without any feelings. Kratos swears revenge, and the scene where Ares tells Kratos' family to go to this village, to escape Kratos, is shown. these scenes, combined, are about 20 minutes long.
There are some scenes of Kratos doing work for the Gods of Olympus, for 10 years. He becomes a champion of the Gods, which is an enforcer of sorts ( in the game, anyway). Just a short narration scene, abotu 2-3 minutes long.
There is a scene of Kratos killing the Captain and the Hydra, then Kratos hears about Ares' attack on Athens. Kratos sees this as his chance at revenge, and goes to the great battle. 5 minutes.
Kratos carves a bloody path through Ares' minions, and eventually reaches the oracle. He saves her from falling to her death, and she tells his of pandora's box,one of the greatest weapons ever created by the Gods. It has the power to kill even a God as powerful as Ares. This part takes about 25 min.
Kratos makes his way through the Desert of Lost Souls, and the next hour of the movie or so deals with Pandora's Temple, including a 10-minute battle with the minotaur.
Kratos reaches the box, but is killed by Ares before he can use it. The next 20 minutes of the movie deal with Kratos getting out of Hades.
The last 15 minutes of the movie deal with the battle with Ares, it starts off with Kratos using Pandora's box, which he stole back from Ares. Kratos uses all his might, but the all-powerful Ares is too much. Eventually, Kratos knocks Ares back with a mighty tackle, and Ares sucks him into his subconsious. Ares summons an exact replica of the time when Kratos killed his family, to destory his fighting spirit. Kratos defends his family with all his power, and Ares soon gets frustrated, and takes Kratos' blades back, and uses them to kill his family again. Kratos returns to the real world, as Ares is about to kill Kratos, and Kratos sees his last hope for victory, a great golden sword. Ares, weakened by the last battle, is no match for the completely rejuvinated Kratos, and is defeated and killed.
everything else happned exactly as in the movie.