Here is the full list of all 46 Omega Labyrinth Life achievements.
Acquired all expansions.
Emerged victorious in the final battle.
Fully restored the garden.
Had all characters attain Z Bust Mode.
Viewed all main characters' spa events.
Defeated the Reaper.
Reached Hyper L mode.
Defeated more than 1,000 monsters.
Befriend all main characters.
Changed leaders a total of 10 times.
Gathered more than 100,000 ωP.
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.
Restored 1 area of the garden.
You've obtained all achievements.
Acquired all Gallery Keys.
Cleared Hinata's trial.
Cleared Berune's trial.
Cleared Mei's trial.
Cleared Mio's trial.
Cleared Nanami's trial.
Cleared Juri's trial.
Cleared Yurika's trial.
Viewed all stories.
Cleared a Sage's Trial.
Cleared Rinka's Test Site.
Cleared the Secrets of the Clock Tower.
Cleared A Distant Garden
Gone on more than 100 adventures.
Successfully stole from the shop.
Upgraded Luster Value more than 100 times.
Achieved a score of 200,000 or higher.
Reached a Luster Value of +99 on a piece of equipment.
Harvested flowers 200 times.
Accumulated more than 200,000 μ of Nectar.
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.
Collected seeds 200 times while in dungeons.