Here is the full list of all 45 Children of Morta achievements. It takes around 25-30 hours to unlock all of the achievements on Windows.
Find 20 journals.
Construct Ben's wine machine.
Upgrade 75 times in the workshop.
Bring back 15 souvenirs from the dungeons.
Unlock all family traits.
Kill 250 ferocious enemies.
Kill a boss with every playable character.
Kill a boss without receiving damage.
Find 10 secrets.
Kill 100 enemies using hazards.
Use 5 charms in the same dungeon run.
Free Anai-Sarava.
Defeat OU.
Reunite the automata.
Complete 10 in-run events.
Free the blackmarketeer.
Unlock all family traits of a Bergson.
Have 20000 Morv.
Resolve 20 puzzle events.
Complete 10 challenge rooms.
Bring Hope into the world.
Free Anai-Raha.
Shelter the stargazer.
Upgrade The Book of Rea 15 times.
Rescue Mary.
Find 10 divine items in a single dungeon.
Have 3 runes equipped simultaneously.
Free the runemender.
Unlock all playable characters.
Upgrade 25 times in the workshop.
Free Anai-Dya.
Complete 5 in-run events.
Kill 5000 enemies.
Upgrade The Book of Rea 5 times.
Kill 50 ferocious enemies.
Save the wolf cub.
Upgrade 10 times in the workshop.
Gain each obelisk effect at least once.
Unlock a family trait of three different Bergsons.
Revive 5 times in co-op mode.
Finish a dungeon in co-op mode.
Defeat the Spider King.
Free the shopkeeper.
Unlock a family trait.
Investigate the shrine of Rea.