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