Final Fantasy 7 Remake's third chapter is your first foray into the game's semi-open sections where you get to complete side-quests. Below you can find a detailed walkthrough of each and the rewards you get for completing them.

Chapter 3 Side-Quests Walkthrough

Chadley's Report

Chadley is the weird kid standing next to Wymer, who wants your help developing new materia. He'll give you the Assess Materia when you take on the quest; use it on any enemies you fight from here on out. It'll give you valuable tactical information, while completing this quest for Chadley. Later, he'll give you Battle Intel assignments with a variety of objectives to unlock additional materia. For this one, return when you've analyzed two different types of enemies to buy the Auto-Cure Materia at a discounted rate.

Lost Friends

Visit the little girl playing west of the Beginner's Hall, who will dispatch you to find three missing cats. Keep talking to her and she'll provide some hits as to where to find them, as well.