After you’ve completed the apartments, your next location will be the Church. You will be standing in an alley behind the apartments with two police officers in front of you. Turn around and walk down the alley to the front of the apartment building. From there, cross the street and walk through the gap in the fence to the right of the 1st Salem Bank.
There are three opportunities to unlock this achievement in this alley.
> Behind the gallows
>The barrels down the narrow alley to the right
>The shack door past the fence behind the bank to the left.