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