Haha, that's funny Helm, I had almost the exact same tweens ready, but decided not to post them because it would take the edit too far

Mine had the gun stationary, because I figured that a high-powered exoskeleton made for battle would be at least capable of keeping the gun level. I agree about the shoulder movement btw.
It should be noted that both Helm's and my edit are animating too fast to be a believable walk animation and too chunky to be a run animation.
Walk vs Run
