We've seen Oregon State University's ATRIAS robot prove its mettle in a controlled environment, sure, but what changes when it goes for a stroll in the great outdoors? Perhaps unsurprisingly, not a whole lot. The biped doesn't have a problem going uphill, downhill, maintaining balance when dodgeballs hit it and even handles variations in terrain with aplomb. It doesn't seem to have any issues changing speed, either. Basically, this proves that the ATRIAS doesn't need perfect conditions to operate, which is important because let's face it: the real world is far from perfect.The upside to all of this is that unlike humans, robots don't quite get stage-fright so replicating these actions in front of a crowd at the DARPA Robotics Challenge come June likely won't be an issue.