I love the animation. You're obviously an above average 3d modeler and an EXCEPTIONAL 3d animator. The movements weren't stiff and rigid like I've seen in others the the reflection was perfect and so was the lighting. The only thing I didn't like is when the blue robot got oil on his left arm after disabling the black robot. The oil was a little too reflective. you could've maybe used a texture in there that made look a little bit more pasty and have a color refraction like in normal oil (when I look at oil, I see some color in it kind of blue and reddish when it's being reflected in the light)

btw, what program are you using. I use Blender 3d