walk through doorway in the middle of frosted glass wall, turn right down hallway, turn left at brick wall, stop in front of first doorway on your left.
Go through the door behind you on your left hand side. Move down the hall to the right toward the fire extinguisher. Move to the goal in front of the fire extinguisher.
Exit the room and turn right. Walk forward until you are standing in front of the exit sign and turn left. Walk forward until you reach the fire extinguisher and wait there.