Here is the full list of all 38 Monster Monpiece achievements.
Fukuruko area cleared!
Won 70 offline battles!
Triggered extreme love 50 times!
Won 50 offline battles!
Got 100 kinds of cards!
Ki Outo area cleared!
Ho Kaido area cleared!
50 successful First Crush ♡ rubs!
Won 30 offline battles!
Hollowlo area cleared!
Triggered extreme love 20 times!
10 successful First Crush ♡ rubs!
First successful First Crush ♡ rub!
Triggered extreme love!
Ginuma area cleared!
Won 10 offline battles!
Performed First Crush ♡ rub!
Kunaguva area cleared!
Trained for the first time!
Acquired a card for first time!
Won a card battle with 0 damage!
Won a card battle for the first time!
Attacked castle for first time!
Performed fusion for first time!
Battled for the first time!
Started the game for the first time!
Obtained all the achievements!
Okinava area cleared!
Tokio area cleared!
Si Ku Ork area cleared!
Got 500 kinds of cards!
100 successful First Crush ♡ rubs!
Irresistible Force
Won 100 offline battles!
Cleared the game!
Your Rub P stock has exceeded 10000!
Triggered extreme love 100 times!
300 successful First Crush ♡ rubs!