Full list of all 41 Monster Sanctuary achievements.
The base game contains 34 achievements, and there is 1 DLC pack containing 7 achievements.
Help out a resident of the Sanctuary
Complete Old Buran's training
Five-star a battle
Discover a hidden room entrance
Hatch first monster
Confront the Alchemists in the Library
Defeat the Goblin King
Pass the Oracle's test
Restore balance to the Sun Palace
Recover long lost treasure
Prove a worthy opponent
Complete Forgotten Workshop story content
Complete Underworld story content
Enter the Land of Blobs
Defeat Marduk
Receive a Tanuki Egg
Become A Keeper Lancer
Defeat all monsters in a single turn
Obtain a shifted monster
Evolve a monster
Receive a 5 star score in the Champion Challenge
Upgrade 50 pieces of gear
Complete twenty five battles in the Infinity Arena OR PvP
Receive a reward from the Monster Army
Deal over 10,000 damage in a single hit
Win 200 wild enounters
Beat all of Trainer Gotthelm's challenges
Achieve at least a 25 x Combo
Become a Keeper Master
Donate 100 Monsters to the Monster Army
Uncover the whole map
Obtain all monsters
Receive 5 star scores against all Champions
Calm the Blue Caves