THIS IS AN UNMISSABLE ACHIEVEMENT!!!
I'm not going to post at what point you obtain it though. Spoilers can accidentally be read by the wandering eye...??
P.S. All of the Achievement Guides I've posted for this episode have the same solution word for word. In 2 hours, you will obtain the full 100G.
EDIT: I now need to add some sort of description of the unlocks to all of my solutions now*** Spoiler - click to reveal ***This Achievement will unlock after you have chosen 1 of the 5 different endings and the "9 Days Later" Sequence has played through. The five different endings (taken from XBOXAchievements.com) are:
1. Clem, Kenny and A.J.: You turn down Kenny's request to stay in Wellington and walk away together.
2. Clem and A.J. at Wellington: Accept Kenny's request to stay at Wellington where A.J. and her can be safe.
3. Alone with A.J.: Either Look Away and then Shoot Kenny or don't forgive Kenny or Jane (Whoever you save).
4. With Jane and The Family: Invite Randy, Patricia and Gill into Howe's Hardware.
5. With Jane and A.J.: Turn the family away from Howe's Hardware, and ensure the safety of A.J.