As I've read in one article, the human eye can get used to the darkness. You know, I wanted to check, and I almost broke my leg in a deadfall. Guess I'm a little old for such a metamorphosis. But you, I think, are in the prime of life. A well-trained night eyesight can help us very much in our difficult tasks. So take care of this. You're a tough guy, you can take a punch. But what if you can't see anything at night and suddenly get ambushed by some scum? Those things happen quite often, not everyone can take NVG's into their raids. So, show me how you see in the dark, without any gadgets.
How many you say there were, six? And you got them all without the "goggles"? Indeed, you are a great night hunter, kid.
This quest can be completed on any map besides Factory. You can use a flashlight on your weapon to make this quest easier to complete. Interchange would be a great choice for this quest as inside the mall is almost the same at night and in day.