I did it twice in one game on vertigo two different people about a minute apart they popped their hammer of sol super and I fixed my 1000 yard stare to the doorway they were about to walk through and got a headshot. They didn't kill anyone with their super. If I had recorded it I would post it but I didn't. Now if they had got any kills will I was sniping them the overshield/health regen would keep them alive. The key is to kill them before they can use their super. Works the same for golden guns, blade dancers, and sun singers you have to shut them down before they kill anyone.