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