Like the horror films that inspired it, one of the possible endings in The Quarry is to have a single female counselor survive the night. Achieving this ending will net you the Final Girl achievement / trophy and one of the game's many possible endings. This guide will provide you with all of the information necessary to get that singular counselor to the end of the game. You can also check out GameSpot's guide to get the Last Man Standing achievement/trophy. Spoilers ahead.

The final girl in question is Kaitlyn, played by Brenda Song. In order to get this achievement you will need to keep her alive through the night and make sure every other counselor/playable character dies. It doesn't really matter if the Hackett family members die or not, although a couple will in order to keep Kaitlyn alive. It's important to note that the guide below provides you with the info to keep Kaitlyn alive and opportunities to kill everyone else. If you fail some QTEs as other characters or make bad choices they might die earlier, but as long as Kaitlyn lives it's fine.

Chapter 1

When Abigail and Emma are at the cabins looking for their bags, you will need to choose to break into the cabins. As Abigail, check the left side of the cabin to find a stuffed animal that makes noise. Keep the stuffed animal. This is required for keeping Kaitlyn alive at the end of the game.