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