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