Here is the full list of all 45 Digimon World: Next Order achievements.
Acquired all achievements
Won all Colosseum competitions
Raised 100 types of Digimon
Completed DigiCards
Partner reborn as DigiEgg 20 times
Raised 200 types of Digimon
Maxed out Tamer level
Cleared all extra dungeons
Maxed out city's Prosperity
Acquired over 1,000,000 bits
Maxed out grades on all facilities as builder
First training mistake
Defeated Armageddemon
Cleared Chapter Four
First DNA Digivolution
Raised 50 types of Digimon
Prosperity at level 100
Cleared Chapter Three
First camp
First Colosseum victory
Inflicted 9,999 damage in one attack
Cleared Chapter Two
Prosperity at level 50
Acquired over 100,000 bits
Maximum value for DigiFriend
Cleared Chapter One
Won 300 battles
Partner reached age 20
All skills for Partner Digimon at 1,000
Prosperity at level 1
Finished a battle with no damage
Inflicted 1,000 damage in one attack
First king-sized foe defeated
First Tamer level
First training
First time fleeing from a fight
First fish caught
First materials acquired
First food ingredient item picked up
First Digivolution to Rookie
First Digivolution to Champion
First Digivolution to Ultimate
First Digivolution to Mega
Maximum value for Bond
First Partner Digimon reborn as DigiEgg