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