Here is the full list of all 34 Thanatos achievements.
First try of Collecting.
Succeed the Collecting 500 times.
First try of Reinforcement.
First fail of Reinforcement.
Succeed the Reinforcement 100 times.
My first rare Item.
Tried Decompose 1 time.
Tried Decompose 100 times.
First try to produce the Weapon.
Succeed the produce the Weapon 100 times.
First try to produce the Armor.
Succeed the produce the Armor 100 times.
First try to produce the Accessory.
Succeed the produce the Accessory 100 times.
Accquired 1,000,000 Gold.
First enterence of Instance Dungeon.
Cleared all level of Charnel House of Monastery Basement.
Cleared the Dragon Nest.
Cleared dungeon 50 times.
First try of skill update.
Used kill point over 100ea.
Hunted 1,000 monsters.
Used potion 100ea.
First use the DS skill.
First Die.
First auto hunting play.
Achieved Lv. 25
Added first friend.
Added 20 friends.
First party play.
Complete 50 Quests
Complete 100 Quests
Complete 150 Quests