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