Here is the full list of all 50 LOST SPHEAR achievements.
Ate Fruit Jelly.
Ate Clam Soup.
Ate Moon Tripe.
Obtained Moon's Soul.
Defeated Dark Ruin.
Used Last Elixir.
Defeated Eclipse.
Obtained Isolation Spritnite.
Obtained Raggys' Spritnite.
Money spent reached 500,000G.
Obtained War Maiden Spritnite.
Obtained Chrono Spritnite.
Obtained Tyranny Spritnite.
Obtained Rainbow Spritnite.
Obtained Sunlight Spritnite.
Landed on the moon.
Returned from the Fade Realm.
Total shop sales reached 100,000G.
Turned into rooster.
Caused 10 sublimations.
Defeated Krom.
Caused 1,000 or more damage with 1 attack.
Made 30 consecutive hits.
Winger acquired.
Royal Capital Marche restored.
Unlocked all spritnite columns.
Created spritnite 50 times.
Made 100 critical hits.
Went fishing 30 times.
Caused 500 or more damage with 1 attack.
Created 10 artifacts.
Sea restored.
Night and day restored.
Made 10 evasions.
Vulcosuit acquired.
Made 10 Machine Kills.
In-battle move distance reached 1000D.
Made 10 Momentum Kills.
Ship acquired.
Collected from Glow Spots 100 times.
Made 15 weak-spot attacks.
Activated Momentum Mode 10 times.
Damaged 3 or more monsters with 1 attack.
Activated Momentum Mode 4 times in 1 battle.
All achievements earned.
Money acquired reached 1,000,000G.
Sublimated spritnite to max level.
Used all paradigm drives.
Defeated 300 monsters with Scan.
Ate 100 different foods.