[his grin widens once their attention is on him]

You can kill as many of these things [he makes a wide gesture with his free hand] as you want, but that's not really going to help much. [a pause, before he laughs it's unsettling] Or not. This place, this place likes to play around more than we do. Can you believe it?

Well, it doesn't matter how many you kill. It's about finishing the area. Everything else? Just collateral damage.