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