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