The Prologue is the beginning of gameplay in Heavenly Sword.
The Prologue introduces players to the combat system in Heavenly Sword. Use or to attack Bohan's advancing soldiers as they near Nariko. When prompted, press ; this will initiate a Superstyle and slaughter many of Bohan's men. Eventually a red haze will appear around the screen and a heartbeat can be heard, meaning Nariko's death is near. Continue fighting until the screen goes black; a cutscene will begin to play. After watching Nariko's death at the hands of the Sword, she will ascend to Purgatory and the section will be complete.
Next Checkpoint: The Art of Battle