During the Halloween event which is from  October 26, 2022 (Wed) after maintenance  to  November 9, 2022 (Wed) before maintenance.

Go to the ESC menu → Adventure Log to view the Halloween Adventure Log as shown below: 

Certain objectives in the Halloween Adventure Log have changed this year ( 2022 ) which are:

- Chapter 1: The Tale of Two Queens: Hand over Isabella's Note to Gueldia (Defeat Isabella that appears at Costa Farm).

- Chapter 2: Tears Behind the Pumpkin Mask: Defeat 5 Mischievous Jacks (same as before).

- Chapter 3, Rumors About the Obsidian Specter: Defeat Spook (Appears together with the event world boss Isabella).

- Chapter 4, Sweet Candies to Warm Your Heart: Give 5 Halloween Pumpkin Candies to Techthon (Obtainable by defeating the Pumpkin Ghosts that appear with the event world boss Isabella).

- Chapter 5, The Star that Never Shines: Give Magical Shard x20 to Gueldia (same as before).

Note: Halloween Adventure Log and event world boss Isabella will be available after Oct 26, 2022 (Wed) maintenance, even though it says the book is now available in-game, infact it's not yet.

- The Halloween Adventure Log can only be completed once per Family. (You can only complete the Halloween Adventure Log during the event).

- If you’ve completed the Halloween Adventure Log in a previous event, you will not be able to complete it again.

That's it about this guide, if you ever have any question, you're welcomed to ask me whenever you want on my discord: Dustan#0325

Enjoy your time!