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