The Texas Chain Saw Massacre

To get this you will need to be playing as Sonny. His ability allows you to track the family members that are in close range and you will see the "noise notification" if they are nearby.

If you're playing with friends you can TRY to get them to lure the family members together and then for you to use the ability to see all 3 of them, however, this can be very tricky.

I managed to unlock this achievement while I was upstairs inside the main house. While I was up there I used the ability and just quickly scanned around, I managed to spot them all and the achievement unlocked.

You can improve the radius of the perk but to do so you will need to play as Sonny and level him up. As you level him up, you can go into the perk tree (not the skill tree) by going to customisation > highlighting the perk > and pressing A. You will then see a tree with 9 connected upgrades. You can unlock one upgrade per level in this tree. The upgrades on the left will improve the radius of the skill.

However, you'll more than likely get this achievement before you've even reached level one with Sonny.