Here is the full list of all 39 The DioField Chronicle achievements.
Use the Battle Log.
Raise a character's level to 50.
Complete the game.
Collect 15 types of weapon in a category.
Complete chapter six.
Acquire 1,000,000 guld.
Acquire 100 bonus rewards from missions.
Recruit Donovar, Chappleman, and Zoruaq.
Complete chapter five.
Defeat a Skeletal Dragon.
Defeat an Ouroboros.
Acquire 25 Blue Fox badges.
Raise a character's level to 30.
Complete chapter four.
Defeat a Coeurl.
Unlock 4 Engravings for any Magilumic Orb.
Defeat 500 enemies.
Spend 100,000 guld.
Acquire 50 bonus rewards from missions.
Complete chapter three.
Deal 1,500 or more damage with one attack.
Defeat a Salamander.
Acquire 7 skills for any unit type.
Complete chapter two.
Conduct Magilumic Orb research.
Develop a weapon.
Complete chapter one.
Revive an incapacitated ally.
Acquire 10 bonus rewards from missions.
Defeat 100 enemies.
Complete a Character Quest.
Complete a Sub Quest.
Defeat a Gigas.
Defeat 5 or more enemies at once.
Acquire an ability.
Acquire a skill on the Skill Tree.
Acquire a treasure chest.
Purchase a weapon.
Purchase an accessory.