You can kill a Hunter with one shot in the back (the orange part) with a sniper on any difficulty.
You were kind of late with that one. I found that out when I was a noob.
Sorry but thats a lie. The best way to kill a hunter is to pick up a carbine and throw a sticky gernade. The sticky will turn him around and then start firing. It will work after about two of these. This is the best way for me to kill a hunter at least since I always play on legendary, but even though it works for me it doesn't mean you should do it.
ru bragging????