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