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