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