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