First of all, this solution is for those who have already completed Episode 1 and noticed that this achievement did not unlock.
If you have not finished this episode yet this is not the solution for you.Allow me by starting with a list of the achievements that did not unlock for me before I realized some did not pop as they should have: (I was nearly complete with Episode 4)
Episode 1Now What?
Episode 2New Morning
Old friends
Episode 3Fresh Fish
Not in Nottingham
I cannot confirm that this will be the same for anyone else experiencing these issues, as well as if there's any other bugged achievements in Episode 4 or 5. Moving forward I'm going to attempt to pop these "bugged" achievements starting from a fresh save as of writing this solution. I just wanted to post this to let everyone be aware that these achievements are potentially bugged from what I believe depends on the choices you make.
I got the achievement to pop using the following choices:
New save file, DID NOT import save.
*** Spoiler - click to reveal ***>It's my dads gun
>Burn photo of Lee
>Distract scavengers
>*All QTEs hit* no death
>[Pet the dog]
>Threw frisbee 3x
>[Feed dog]
>[Kill dog]
>I think so
>We were attacked
>Please believe me!
>I killed it
>Yes
Achievement should pop. Please comment if this worked for you. I will see you next in Episode 2 for the attempt at popping "
New Morning". I went to the main menu and started up Episode 2 immediately after this achievement popped.