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