He was laying on a building, holding a Sniper rifle and aiming at his enemy. He was fully paying attention to his target and nothing else so he didn't notice you slowly creeping up behind him. When you were finally standing behind him you grabbed his legs and flipped him over so he would be laying on his back. You were pointing a gun at his head and then you spoke up

"Your time has come to an end, any last words?"

you asked him with a cold voice while pointing the gun at his head