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