You have gotten all of the help that you can get from the outside. Someone has helped you to escape your cell. It is up to you and only you to escape the encampment on your own. You have been able to acquire some weapons to help you fight off your enemies as you move through the building. You will be given missions for each of the levels. It will be things telling you that you must kill so many guards with one bullet. If you accomplish the missions you will earn more money and you can use the money to upgrade your weapons.