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