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