Is this thing been developed to kill humans?
So this specific robot is not meant to kill humans, but a robot in the future based on it's technology might. Currently the military has a large aversion lethal autonomous systems, so I don't think it's going to happen.
Humm... what about the drones?
The military, as of yet, has had an aversion to robots that can decide to pull the trigger on their own.
It just seems to be a proof of concept for an agile quadrupedal machine. I see no reason to assume it's going to be used to kill people.
As inventors, I would say it's high time we start to think about the consequences of our tech "innovations".
Though granted if the people it's transporting have guns that's a moot point.