The Myth of Maxwell
When to do it: As soon as you enter Nia Khera for the first time.
Reward for Completion: Nothing
How to Trigger: Upon arriving in Nia Khera, immediately find the Old Man in the middle of the town (refer to the screenshot above).
Objective: Watch the cutscene
Offerings for Milla
When to do it: As soon as you enter Nia Khera for the first time.
Reward for Completion: 1800 Gald, BedHead (cosmetic item)
How to Trigger: Simply talk to the quest giver (refer to the screenshot above).
Objective: Obtain Insect Husk. Simply find the item laying around in the Nia Khera Spiritway.
Something Tasty
When to do it: As soon as you enter Nia Khera for the first time.
Reward for Completion: Drippy Nose.
How to Trigger: Find the little boy hanging out at the entrance (refer to the screenshot above).
Objective: Find the Napple. To get the item, go to Hamil and search one of the houses in town.
Incoming Monster
When to do it: As soon as you enter Nia Khera for the first time.
Reward for Completion: Elf Ears, 1800 Gald
How to Trigger: Find the old man in one of the exits (refer to the screenshot above).
Objective: Kill monsters in the northeast section of Nia Khera Spiritway.
Rappig, Rappig
When to do it: After Elize joined your party.
Reward for Completion: None
How to Trigger: Go back to Nia Khera and find the pigs in the middle of the town (refer to the screenshot above).
Objective: Watch the cutscene.
When to do it: After being able to travel between Rieze Maxia and Elympios.
Reward for Completion: None
How to Trigger: Go back to Nia Khera and find the girl near the entrance to Kijara Seafalls. (refer to the screenshot above).
Objective: Watch the cutscene.
Correct me if I’m wrong but I don’t see the sub event “Ivar the Shaman” anywhere.
Yep, you missed the “Ivar the Shaman” subquest in the above list. It’s very easy, just return to Nia Khiera as soon as you get the world map and talk to Ivar. That’s it