I'm no conspiri-loon, but if this is the kind of stuff that DARPA-funded companies are allowing us to see, god only knows what else they've developed that they're keeping under wraps...
There's a famous quote about this from someone - take the bleeding edge of state of the art, and add 25 years.
innit. mapping the terrain below it, finding the good footholds, moving the limbs there quickly and dealing with unexpected obstacles. this thing is as agile as a real animal now.amazing
I want to see them fight, surrounded by a baying crowd of Tokyo techno-fetishists, betting with electronic credits.
I imagine they use very high-spec motors, batteries and materials. so, a while yet.