The 100% Achievement Guide hasn't added The Pitt and Atlantic City achievements
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Big thanks to Spartan, and NightLizard

Select Atlantic City Expedition:
Complete the two "Tax Evasion" and "The Most Sensational Game"
Can do these solo or in a group. If solo, best to have a good build

"Lesser Devils" are located in the Tax Evasion expedition














How they look like:
I do warn you; Lesser Devils dish out crazy damage


Made an example video by showing the location, and the quickest method to repeat with killing. Do this 5 times with "melee" (adds to 10 kills) to unlock the achievement
Don't have a Melee build? Can shoot to weaken, and finish them off

Head over to "The Whitespring Resort" and visit the "Refuge"




















Just buy one casino game plan from "Giuseppe" with stamps
Plans like:
Honey Pot O'Gold Machine
Atlantic City Roulette Table
World Biggest Machine
Atlantic City Card Table
Atlantic City Poker Table

You can get rewarded a plan when completing those "expedition" for Atlantic City. I think it's every week


Then travel to your camp. Build, and scrap "5 times" with the casino game to unlock the achievement

Just complete "Flooded City Center" Expedition
Best place for the "Weed Killer" achievement by killing 100 Overgrown creatures with fire

In your pip-boy; under Data-Main-Misc. Quest called "Nightclub Advertisement"
























The poster will be located inside "The Whitespring Refuge"
























Then head up North to "The Rose Room" Nightclub
The quest is fairly long to complete, but do enjoy

"Flooded City Center" Expedition great for killing the Overgrown creatures (30 - 40 per play)
Will take time to get 100 kills. You can cheese by launching, and leaving the Expedition to farm kill them


Best weapon:
The "Holy Fire" (if you got one)


























Compressed this gif to 2mb, in order to upload :<







or you can make a "Flamer"
Finding or Buying is optional