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