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