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