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