It looks to me like it is one or two images combined but I am not sure there are a lot of "edits" except color balances, levels and the like. The wall and gutter may be softened with blurs and feathering of selections. The sky may be an addition. The figure is likely a separate selection superimposed. The shadows from the arm may well be painted by hand. That is not difficult to do with varying soft and hard brushes and opacities, as long as you know how shadows look.
Just looked again at the gutter if that's what it is. That also looks added or selected and moved down over the wall and doorways. Maybe, maybe not, shrug