[ ...shakes his head and turns to the side, where the great branch slopes downwards at a moderate grade, the bark rough enough to afford ample footing for most. Which he employs, descending with the ease of practice, metal fingers occasionally touching the stone wall running alongside.

About a few metres down, and a dozen ahead, he stops again, figure still visible in the dim diffraction from the third floor's lighting. ]

Not from there. Here's the nearest vantage.