You are facing towards the door right now, slightly turn to your left and move forward, turn right, you can find a table with two chairs, go near the table, slightly turn to your right and move forward, you can find a step, go up the step and move forward, move towards the step which is infront of you, to your right, you can find a staircase, go up the stairs, you are facing towards the closed door right now, turn right and move forward, slightly turn to your right, stand on the fifth step, that would be your end point.