Children of Morta

Family traits are passive buffs that every character gets when unlocked. Each playable character has multiple family traits that they can unlock. To unlock this achievement, you need to get your first family trait.

To unlock family traits you need to level up and spend skill points. The first family trait for each character is unlocked after spending four skill points. Once you spend four skill points for a character and unlock the family trait, then the achievement will pop.