Here is the full list of all 57 MY HERO ONES JUSTICE achievements.
Fight 50 online battles.
Fight 20 online battles.
Fight 5 online battles.
Obtain 400 player customization items.
Obtain 450 character customization items.
Obtain 300 player customization items.
Obtain 350 character customization items.
Reach a combined character level of 500.
Complete Score Attack Mission.
Fight 100 local matches.
Collect 100,000 hero coins.
Acquire 100 titles.
Win 50 battles using villains.
Perform 50 Plus Ultras using villains.
Win 50 battles using heroes.
Get a perfect win 10 times in online or local matches.
Fight 30 local matches.
Perform 50 Plus Ultras using heroes.
Win 20 battles using heroes.
Fight 10 local matches.
Fight on 5 stages in local matches.
View 20 characters' battle entrances.
Complete Map 6.
Complete Maps 1 to 6.
Complete Maps 1 to 6 with an A-Rank or above.
Complete Map 5.
Obtain 200 player customization items.
Complete Map 4.
Collect 50,000 hero coins.
Reach a combined character level of 100.
Obtain 250 character customization items.
Complete Map 3.
Reach a combined character level of 50.
Complete Map 2.
Use sidekicks 100 times.
Complete Map 1.
Complete every story chapter.
Complete every story chapter with an A-Rank or above.
Complete "All For One."
Win 20 battles using villains.
Obtain 100 player customization items.
Use sidekicks 50 times.
Complete "Complete Victory."
Obtain 150 character customization items.
Complete "Encounter."
Complete "A Real Hero."
Complete "One For All."
Trigger 50 wall rushes.
Complete "Climax."
Acquire 20 titles.
Complete "Up and Over."
Perform 1,000 combos against opponents.
Use sidekicks 10 times.
Use Quirk Specials 100 times.
Complete "Re-Ingenium."
Get an Ultra Finish.
Complete "Bizarre! Gran Torino Appears."