Chroma Angle Office Escape

Yesterday the chief gave you a lot of work that needs to pass before the end of the week. In view of these circumstances, we were forced to stay in the office after hours. The guard, who closes the office, you did not notice, and closed the door. You did not realize it and continued to work. When you are going home, he saw that the door was locked, and no one can not hear you. You need to somehow escape from the office, because at home you expect a hungry dog.