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