Here is the full list of all 47 ONE PUNCH MAN: A HERO NOBODY KNOWS achievements.
Earn every trophy.
Reach the maximum Player Level.
Get promoted to Hero Rank Class S.
Reach Player Level 50.
Obtain 150 or more avatar parts (accessories excluded).
Clear 100 or more missions.
Clear 30 or more subquests (tutorial excluded).
Deepen bonds with ten heroes.
Reach the max level for the monster battle type.
Obtain 30 or more Killer Moves.
Deepen bonds with five heroes.
Obtain 30 or more skills.
Clear Chapter 11.
Clear Chapter 10.
Clear Chapter 9.
Use a boost item for the first time.
Clear Chapter 8.
Obtain 50 or more pieces of furniture.
Get promoted to Hero Rank Class A.
Equip a Super Killer Move and use it in battle (tutorial excluded).
Reach the max level for the psychic battle type.
Clear Chapter 7.
Reach the max level for the power battle type.
Clear Chapter 6.
Deepen bonds with a hero.
Clear Chapter 5.
Reach the max level for the machine battle type.
Reach the max level for the weapon battle type.
Clear Chapter 4.
Unlock more than 15 characters for Free Battles with Team Rules.
Clear Chapter 3.
Place furniture in your room for the first time.
Get promoted to Hero Rank Class B.
Equip a skill for the first time.
Perform a Mode Change in battle for the first time (tutorial excluded).
Clear Chapter 2.
Reach the max level for the standard battle type.
Clear a mission from Hero Association HQ for the first time.
Make a purchase for the first time.
Change your outfit for the first time.
Set a Killer Move for the first time.
Clear a subquest for the first time (tutorial excluded).
Perform a perfect guard in battle for the first time (tutorial excluded).
Clear a mission from a Hero Association branch office for the first time (tutorial excluded).
Land the first attack in battle for the first time (tutorial excluded).
Clear Chapter 1.
Increase your Player Level.