My Lovely Daughter

For this achievement, you need to be rich when your daughter's body decay/rot. So, you need:

1. Buy a good portion of Balm
2. Collect 60k ~ 70k gold
3. Wait for your daughter to rot

This achievement is pratically unmissable.

When you trie to infuse the soul in your daughter for the first time, you need to have 500 or less of one affinite (Joy, Sadness, Anger, Fear).
Since its part of the Introduction history, you will get this achievement naturally.