Apart from the saga-like Secret History of the Mongols, there are hardly any contemporary sources about him. Ghengis Khan was the first Mongolian leader who achieved a durable Mongolian union. He ended the petty tribal squabblings and organized the nation by a rigid beaurocratic system. It was under him that the great Mongolian invasions began. At the time of his death in 1227, his empire would reach from Peking to the Caspian Sea.
In spite of his severe cruelty, Ghengis Khan must have been a very charismatic person. Even in his young years as a solitary fugitive, some people were so impressed that they gave up everything to follow him. He was cunning and knew how to survive the intrigues, the betrayals and the inner conflicts of the Nomadic tribes. He was physically strong and had an unbendable will - but all the same, he was able to listen to advice. Many of his decisions were influenced by his counselors, his generals, his wives and his kin.
You will play most of this campaign as Ghengis Khan, apart from your last, posthumous task. You will have to subjogate the other Mongolian tribes or make them join your cause, annihilate the Tatars, rout the Hsi Hsia, invade North China and capture Peking. Your final challenge will take place seven years after Ghengis Khan's death: The last Chin Emperor must die - you can either kill him or 'convince' him to commit suicide. With his death, the Chin dynasty will come to its end. This campaign can get tough in places, so you might want to save your game at critical points. Enjoy!