Here is the full list of all 46 Omega Labyrinth Life achievements.
You've obtained all achievements.
Completed the Synthesis Codex.
Completed the Item Codex.
Viewed all stories.
Acquired all Gallery Keys.
Completed the Flower Codex.
Reached a Luster Value of +99 on a piece of equipment.
Used a mic with all playable characters.
Maxed out all skills for all characters.
Completed the Object Codex.
Had all characters attain Z Bust Mode.
Cleared the Secrets of the Clock Tower.
Completed the Monster Codex.
Cleared A Distant Garden
Defeated the Reaper.
Cleared Rinka's Test Site.
Cleared a Sage's Trial.
Gone on more than 100 adventures.
Acquired all expansions.
Cleared Juri's trial.
Harvested flowers 200 times.
Cleared Mei's trial.
Cleared Mio's trial.
Cleared Berune's trial.
Cleared Nanami's trial.
Cleared Yurika's trial.
Emerged victorious in the final battle.
Achieved a score of 200,000 or higher.
Accumulated more than 200,000 μ of Nectar.
Fully restored the garden.
Reached Hyper L mode.
Upgraded Luster Value more than 100 times.
Collected seeds 200 times while in dungeons.
Viewed all main characters' spa events.
Befriend all main characters.
Changed leaders a total of 10 times.
Successfully stole from the shop.
Assimilated for the first time.
Gathered more than 100,000 ωP.
Cleared Hinata's trial.
Defeated more than 1,000 monsters.
Pai has appeared.
Spoke to both Greedrat and Petal Gob at least once.
Upgraded Luster Value for the first time.
Restored 3 areas of the garden.
Restored 1 area of the garden.