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