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