This one looks great. I love the low contrast textures in the concrete. The level of sharpness from foreground to background is a little inconsistent, though; where everything behind them is blurred with "bokeh," there are some sharp highlights on rubble under the window that are somewhat distracting.
Nice job! I love the lighting on this one. For some reason, the lighting looks dusty, like it too belongs in this old and decrepit building. The pose in the middle, while very dynamic, looks a little off though. The foot he picked off the ground looks a little far back, and he himself might need to lean a little forward. Great work though, I think this is one of your best.