As you explore the game’s world and its many towns, you will come across people who need your help with something. These NPCs will have a purple bubble over their head, indicating they have a quest for you. There are 60 of these side quests in the game, and you only need to complete 40 of them to get this trophy/achievement. None of them are missable, so you can go back to do them at anytime. If you wish to see all of them, go to the Quest section of the guide.