Here is the full list of all 53 Mystic Saga achievements.
Collections completed
Interactions with Monk
Explored: Temple
Interactions with Tiger
Explored: Huntress's Lodge
Tea Ceremony Collection complete
Interactions with Sage
Chests opened
Interactions with Wolf
Explored: Library
Failed explorations
Locations explored in silhouettes mode
Interactions with Merchant
Energy spent
Locations explored in night mode
Rewards received
Interactions with Stableman
Level reached
Energy increased to
Explored: Smithy
Explored: Market
Quests completed
Locations unlocked
Locations explored
Explored: Cabin
Items bought
Coins spent
Crystals spent
Energizers used
Amulets used
Tools used
Interactions with ghost
Interactions with Spider
Interactions with Ice Dragon
Interactions with Woodsman
Interactions with Crane
Interactions with Sailor
Interactions with Sea Monster
Interactions with Bandit
Interactions with Dragon
Explored: Swamp
Explored: Cavern
Explored: Snow Fortress
Explored: Underwater City
Explored: Floating Islands
Explored: Mysterious Forest
Explored: Desert
Explored: Harbor
Explored: Palace
Elemental Keys Collection complete
Emperor's Dragons Collection complete
Imperial Regalia Collection complete
Fish Market Collection complete