Right now, you're facing towards the edge of the wall. Turn behind and exit the room through the opened door, which is in front of you. Now, slightly turn right and you can see an another opened door. Walk into the room and move towards the staircase, which is on the right side. Now, slightly turn left and move forward and exit the room through the opened door, which is in front of you. Now, slightly turn left and move forward. Stand at a point, where you can see a closed door in front of you and that is the end point.