Here is the full list of all 37 Tree of Savior (English Ver.) achievements.
Fail to enhance at +15 with an Anvil (Enhancing with silver, golden, ruby, and diamond anvil does not count)
Obtained Arch Stone
Obtain Vaivora weapon
Transcended the equipment
Destroyed equipment by enhancement
Added Socket to the Equipment
Tried to enhance equipment
Clear Lepidoptera Junction: Legend (Hard)
Changed Haircut at Beauty Shop for the first time
Drew a Legend Assister Card
Participated at Team Battle League
Acquired Nukella for the first time
Tried Offering
Clear White Witch's Forest: Legend (Hard)
Sold an item at the market
Successfully changed character's gender for the first time
Repair item for the first time
Durability of the main weapon became 0
Used Soul Crystal to ressurect
Character became incapable of battle
Breakthrough the cage of Skiaclipse
Achieved Enhance Skill attribute Lv.100
Changed Class
Purchased item from the Contents Point Shop
Dismantle legend item
Visit the Fedimian Public House
Fed the Cat in Klaipeda
Gave Like to someone
Added a Companion
Achieved first Adventure Journal point
Cleared Level Dungeon for the first time
Draw Gem
Clear Assister Dungeon Stage 40
Equip item in the body costume slot
Ate food for the first time from the Refreshment Table
Purchased item from the Mercenary Badge Shop
Sent a friend request