Here is the full list of all 46 LA-MULANA 2 achievements worth 1,000 gamerscore.
Defeat Fafnir.
Defeat Vritra.
Defeat Kujata.
Defeat Aten-Ra.
Defeat Jormungand.
Defeat Anu.
Defeat Surtr.
Defeat Echidna.
Defeat Hel.
Defeat the 9th Child.
Obtain the Holy Grail.
Obtain the Grapple Claw.
Obtain the Feather.
Obtain the Lamp of Time.
Obtain the Ruins Encyclopedia app.
Obtain the Future Development Company app.
Obtain the Gale Fibula.
Obtain the Clay Doll Outfit.
Fill every item slot.
Unlock all fairy locks.
Obtain all applications.
Unlock every encyclopedia entry.
Receive retribution.
Receive a warning.
Start Hard Mode.
Meet Mulbruk.
Get a fairy to cooperate with you.
Unseal the Ruins Project Map.
See Eg-Lana through to the End.
Find a Garb Chest that needs a special key to open.
Save the queen from the ruins.
Get invited to Nibiru.
Witness Alsedana's funeral til the end.
Don't let that stop you from saving that pain-in-the-neck.
Visit someone who knows of the Underworld.
Reach the Underworld.
Enter the Corridor of Blood.
Clear the game.
Clear Hard Mode.
Obliterate all Guardians without using secondary weapons.
Obliterate all Guardians without using secondary weapons in Hard Mode.
Visit Nebur's store 20 times.
Visit Nebur's store 40 times.
Pepper is for food, not people.
Help the Elder overcome his weakness.
Looking forward to the holiday snaps.