Anton Chigurth versus Agent 47

Anton and 47 are locked inside Nakatomi plaza. The plaza is dimly lit. Anton is on the top floor, armed with his silenced shotgun and his bolt gun. 47 is on the bottom floor, armed with his twin .45's. They must hunt down each other and kill.

Who wins?

Chigurh is a silent stalker. If he's able to get one up on 47 and put a bullet in his back, sure. But I doubt it.

You mean a shell.