In Mirror’s Edge you play as free-running Faith who works for an underground (or over ground) package delivery service in a repressed city. The government 
wants everyone to behave and act in a certain way and they are watched through cameras constantly to stop anyone who acts out of line or stands in their way. This is why she lives, breaths and works on the rooftops of the city avoiding the “blues” whilst jumping, vaulting, wall running and performing 180 degree jumps to reach the top of buildings to make her deliveries.
As soon as you enter the beginning of the game you get a sense of the detail of the immense playground set out before you. In the beginning of story mode you take your training with Cecile and she takes you through the basic movement skills like sliding under vents and swinging on bars between ledges and vents which become useful skills once you master them, I did find this a little hard to get a grip on but it is easy once you get the hang of it. Even disarming the “blues” and combat training are taught later on in the game and you may find that using different combinations of your movements can combine into making more impressive combat moves and disarming techniques.
