Here is the full list of all 53 Mystic Saga achievements.
Interactions with ghost
Explored: Swamp
Collections completed
Interactions with Monk
Amulets used
Explored: Temple
Tools used
Interactions with Tiger
Crystals spent
Explored: Huntress's Lodge
Coins spent
Tea Ceremony Collection complete
Interactions with Wolf
Interactions with Sage
Chests opened
Items bought
Interactions with Merchant
Explored: Library
Energizers used
Interactions with Stableman
Locations explored in silhouettes mode
Energy spent
Rewards received
Locations explored in night mode
Level reached
Energy increased to
Explored: Market
Quests completed
Explored: Smithy
Locations unlocked
Locations explored
Explored: Cabin
Failed explorations
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: 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