I agree with tirediron, that it works as a street shot. The deep black of his shirt and sunglasses do a good job of pulling the eye in amidst all the middle grays of the shot, so even though he is a relatively small portion of the frame he is the focal point. I also like the pose that you've captured - his body is square to the camera, showing his chainsaw-wielding burliness, yet his face is turned (the 3/4 position both creating a more interesting shape than head one and making the image look unposed). It's too bad the water bottle is positioned where it is, breaking up the flow of his sleeve and minimizing the effect of his guns.
But yes, as an environmental portrait it falls short. For me this is largely due to him being so small in the frame, compounded by the large bear in the foreground. For it to work as an environmental portrait (to me), he should be the most important element in the shot. He could still be a relatively small portion of the frame, but the rest should be comprised of smaller elements - say, if he had been surrounded by garden gnomes instead of tall bears and bulky tables. And of course, for a "portrait", interaction with the camera helps (though is not strictly necessary).