Really.........another bipedal robot? there is a reason we don't have them or are developing them. Because you can defeat them with a weapon from the before the civil war. Two cannon balls tied together with a chain and you render the robots useless. You would think a history professor would remember the simple bolo. Same with multi leg attackers. I mean really? the marines would have wiped the aliens asses even without technology. Not to mention a field of caltrops would have done more to dissuade the aliens and render the robots unusable. These soldiers dumbest in history.