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