Here is the full list of all 64 La-Mulana achievements.
Completed the adventure.
Completed the entire adventure within 40 hours.
Completed the entire adventure within 20 hours.
Filled every item slot.
Called a fairy from every fairy point.
Obtained all M-SX software.
Unlocked the HELL TEMPLE.
Obliterated all guardians.
Obliterated Palenque.
Obtained Beo La-Mulana.
Started HARD MODE.
Squashed by a falling sun.
Obliterated Tiamat.
Obtained all Life Gems.
Obliterated Baphomet.
Obtained all maps.
Learned ancient La-Mulana words.
Challenge the balance of the spirits
Obtained the Ocarina of The Philosophers.
Unlocked all fairy locks.
Obtained La-Mulana.
Opened the entrance to The Gate of Time.
Found every NIGORO staff member.
Bought something other than "Rose & Camellia" from the reformed merman.
Obliterated Zu without using the Lamp of Time.
I warned you.
Flattened by a falling giant.
The Twin Labyrinth has opened.
Surprised Shunderia.
Proved that you are indeed small.
Took a knee.
Dived into a pot.
Obliterated Viy.
Obtained Future Development Company
Revealed Eden.
Obliterated Sakito.
Obtained the Wing
Obliterated Bahamut.
Obliterated Elmac.
Mulbruk awakens.
Obliterated Amphisbaena.
Got the cooperation of a fairy.
Received damnation.
Opened the entrance to La-Mulana.
Completed the entire adventure within 10 hours.
Bathed in the hot springs 100 times.
Opened all small treasure boxes.
Got all emails.
Listened to everything Mulbruk has to say.
Listened to everything Xelpud has to say.
Scanned all suspicious spots.
Completed the HELL TEMPLE.
Obliterated all guardians in HARD MODE
Watched the ending with the entire cast present.
Everyone in the ending has that summer feeling.
Everyone's here, but only you feel like it's summer.
Opened the backdoor to the Tower of the Goddess.
Survived the 3rd infinite corridor under your own power.
Completed the HELL TEMPLE in HARD MODE.
Completed the HELL TEMPLE without the Fairy's Vest.
Obliterated all guardians without using secondary weapons.
Obliterated all guardians without using secondary weapons in HARD MODE.
Ate curry in a variety of situations.
Smooshed by a Super Punch.