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