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