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