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