While there is an option to import choices from Seasons 1 and 2, because of an error I was not able to so I was forced to create a new backstory. What differences this will make for people reading these solutions, I can't say. None of the achievements are missable and you'll get them anyway, but your experience may differ somewhat from mine. I'll keep these solutions as general as possible to account for that.
Chapter 4 begins with
cooly dispatching a walker as Javi is led down the highway. A conversation ensues as the two of you evade walkers and head towards a walled compound. Dodge a walker with
, then aim with
and take the walkers down with
once they're in your sights. Once you save someone from being attacked the gate will be open and you'll be able to go enter the compound, named Prescott.
Once inside the tavern, head up to the bar and talk with the people playing cards, one of whom recognizes Javi from his time as a professional baseball player. Offer your advice to the other card player if you like, before Javi returns to
as a disagreement turns heated. Regardless of your choices
and you're faced with the major decision of corroborating the story or not. Either way, this ends the chapter.