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