I spent ages around the loot cave trying to find him so I could record it on my xbox for proof and nothing. Then my brother jumps online and he only has 360, so I switched consoles to do some strikes with him, but he wanted to do queens bounties, so we trudged through old Russia again farming headshots on the way to the spider tank, when the little wretch ambushed us at the laser tunnel from the sepkis strike. He was cloaked on that balcony above and behind where you deploy your ghost, and when my brother (who was ahead of me) ran through the tunnel he decloaked with a flash of red and teleported into the tunnel after him. I attacked from one side while my brother attacked from the other, but all our ammo seemed to pass right through him. Before we could empty a clip each on our auto rifles he leaped at me and I ended up back in orbit. My brother at the same time saw what he thought was a flash bang and he ended up back at the old Russia explore spawn. Our fireteam had disbanded.