This achievement is hard to get without looking like a jerk, as people are overly cautious in modern fallout 76 to get a wanted level the really greasy thing to do if you are desperate is to essentially bait someone into shooting you first then follow it with a barrage of bullets killing them quickly. Places todo this in a sneaky fashion would be at the end of events as sometimes there will still be an enemy or two left and someone shooting at it, step in front of their bullets and lay down the law.
HOWEVER, we have a very valuable resource at hand being this website. If you need to get this achievement and dont want to feel guilty about taking out innocent vault dwellers there are plenty of people on here to LFG with and get this achievement fast. I am also willing to help as long as I’m online, message me at my gamer tag Tgswain