Less of a guard bot and more as a (zombie) hunter. Some of our lab minions say that they could easily take this out with a sniper rifle. The sniper threat on the hydraulics of these in motion would be minimal, especially if it is integrated with the future weapons system from DARPA that is doing echo location. Sniper will get one shot and then they’ve been found within a second.
Another lab minion sais well it has light armor so we could easily blow it up! Explosives? Yeah, but then it takes quite a bit of armor to protect against explosives. Against it with small arms? You’re doomed.
Our plans are to buy a few and have them protect us from the zombie apocalypse. The great thing about robots is that biological warfare can’t hurt them.