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