This thing is absolutely beautiful. Starting with the color scheme, it fits very nicely with the light bley. Those legs seem wonderfully constructed using various methods of connection to add a cool robotic look to the whole thing, along with the torso and left arm. The feet, look like they could've been a bit better, perhaps filling it in a bit more, as the current ones looks a bit weak. The left arm gun is very nice and the greebles on it make it seem very complicated. Now, the black arm, it seems people seem to be looking at another MOC, because I think it looks amazing. Knowing your love of asymmetry, the idea of the "broken/damaged robot" has been used before by you, and is pulled off very nicely here. I think the robot arm adds some realism, and maybe even story- an ancient robot who's been upgraded in a more modern world ahead of his time. The arm and it's gun are pulled off great to me. All in all, amazing work (yet again.) Brickeens.