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