The composition and lighting in this photo are not too bad. I liked especially the right side of the photo, where the columns draw your eye in. But, the photo seems to go nowhere, except maybe to draw your eyes straight to the person who is supposed to be "hidden". The focus is the worst part of this shot, the foreground is in focus, but the background is not, and it doesn't enhance the picture at all. The challenge is met, because the person is not in plain view. If it were not for the yellow on the person they would almost blend in perfectly.
Don't be too discouraged, this was a hard challenge, as is evidenced by the lower number of submissions. I didn't submit to this one myself.
challenge met. i'm sure you've already got some comments about focus so i'll skip that. i like the columns lined up to the right, they give a nice feeling of depth to the photo. overall, the colors are rather muted, partially because it seems to be an overcast day. some color adjustments could've livened that up a little bit.
Nice picture. It is very creative and displays the challenge very well. The darkness and mysteriousness of the background helps the concept of the photo as well.