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