On this page of The Quarry guide, you will find the walkthrough for chapter 3. You will learn what you need to do to complete this part of the game and unlock the Chapter 3 achievement.
After a game of truth or dare, Abigail will find herself alone in the woods. Here you can find The Tower tarot card. Keep walking and Nick will come to your rescue. You may lead them to kiss, but this does not affect the relationship or the plot. When the characters hear a shrilling voice, they will start running away.
After attacking Nick you will have a choice - help him or run away. The effect is the same. Abigail will return to camp alone; the rest will decide to go back after Nick. Abigail cannot die in this sequence.
Jacob runs away to the lake after Emma kisses Nick. After a moment, however, Emma will appear and suggest they go swimming in the lake together.
Your task will be to find the towels. You certainly won't find those, but instead you'll discover The Star tarot card and the clues North Kill Gazette, Old Camp Photo, and No Swimming Sing.
Jump into the lake to spend a moment with Emma. This gets interrupted by Abigail's scream, which Emma cannot hear. As Jacob, you have the option to run to the rescue or jump into the lake. If you choose the option with diving, you will find a Bloated Corpse evidence. Abigail will make it to camp anyway, this will only delay the moment of leaving the lake.
Ryan sits in camp - he will hear Abigail scream. He can immediately go help her and get Nick or wait. In either case, Nick will survive and end up in the camp. Selecting the shortcuts will unlock the Nick of Time trophy. When you encounter Bobby, you don't have to shoot him. The man will let Nick go anyway.
After the sequence with Nick, you will once again go back to Jacob. The man rushes to help Abigail.
While running through the woods, Jacob will run into a trap and encounter a man. Bobby will let him go no matter how you behave.