Here is the full list of all 50 LOST SPHEAR achievements.
Returned from the Fade Realm.
Turned into rooster.
Defeated Krom.
Used Last Elixir.
Sublimated spritnite to max level.
Winger acquired.
Royal Capital Marche restored.
Unlocked all spritnite columns.
Created spritnite 50 times.
Caused 10 sublimations.
Caused 1,000 or more damage with 1 attack.
Made 100 critical hits.
Sea restored.
Created 10 artifacts.
Caused 500 or more damage with 1 attack.
Night and day restored.
Made 10 Machine Kills.
Vulcosuit acquired.
Made 10 evasions.
In-battle move distance reached 1000D.
Went fishing 30 times.
Ship acquired.
Made 15 weak-spot attacks.
Collected from Glow Spots 100 times.
Made 10 Momentum Kills.
Activated Momentum Mode 10 times.
Activated Momentum Mode 4 times in 1 battle.
Damaged 3 or more monsters with 1 attack.
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.
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.
Total shop sales reached 100,000G.