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