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