I got some good news for those who missed cards in Dead City, Authority Prison, The Well, Outrigger Settlement! You can just buy the cards from either Halek (Hagar Settlement), Outfitters (Wellspring) or Jani (Subway Town). The price is a bit expensive (around $1000 each card) but it's a good way to clean this achievement up even if you missed one. You do not need the DLC for this since my friend (XBOXNICKB) missed a card in The Well without having the DLC installed and could still buy it.
Have a good day!