Here is the full list of all 15 MY HERO ULTRA RUMBLE achievements.
Become Champion 100 times in total in Ranked Matches.
Unlock 10 Illustrations in the Gallery.
K.O. 300 opponents in total in Ranked Matches.
Send 10,000 Likes in total.
Reach Player Level 50.
Obtain 1,000 ★ in Missions in total.
Obtain 50 Emblems.
Reach Pro rank.
Reach Amateur rank.
Purchase an item at the Shop 100 times in total. (Purchasing multiple items at once only counts for 1 time.)
Create a "My Banner"
Complete the Tutorial. (Can be achieved even if Tutorial is skipped.)
Obtain 1,000,000 Gold in total.
Obtain 1,000,000 Agency Points in total.
Get the highest rating 200 times in total in Ranked Match results.