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