Hi fellow witcher!
Since this is a
main quest, you probably can't miss it much (remember to make it your "active quest"). Required level is 6, so still in the early game (depending on your skills and difficulty settings) but you have to fulfill a long list of quests and side-quests to unlock this. If you get lost in the process, head to your quest menu, check your main objective and come back on track!
The quest for this achievement starts after the quests "Bloody Baron" and "Ciri's Story: The King of the Wolves". To unlock the cheevo, you need to finish the
following quests:
*** Spoiler - click to reveal ***1) Family Matters
2) A princess in distress
3) Ciri's Story: The Race
4) Ciri's Story: Out of the Shadows
5) Hunting a Witch
6) Wandering in the Dark
7) Ladies of the Wood
As for the mission itself, here is two detailled guides:
1)
https://www.ign.com/wikis/the-witcher-3-wild-hunt/Family_Mat... (credits to IGN)
2)
https://witcher.fandom.com/wiki/The_Witcher_3_main_quests (credits to fandom)
Hope this helps anyone out there!
Greets