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