Mongil: Star Dive unlocks

One-time tasks for the current patch cycle — unlocks, questlines and setup you do once, then never again. Recurring daily and weekly tasks are on the checklist page.

Unlocks

Verified for 1.4 — Ashen Cradle Lullaby✓ Verified in-game

One-Time (Version 1.4 cycle)9

Version 1.4 additions

New one-time content from Version 1.4 "Ashen Cradle Lullaby".

Complete Isabella's Epic Quest
Isabella, the Lazy Genius Engineer, is the new 5★ added in Version 1.4. Accept and play her Epic Quest from the bottom-left of the [Quest] screen once Episode 7 "Ashen Cradle Lullaby" is cleared
Reward Story content and Epic Quest rewards

Permanent account progression

Not all from Version 1.2, but all still worth finishing if you have not. Several are the game's main sources of Compasses.

Complete Manon's Guidebook
Beginner and tutorial progression
Reward Gold, EXP materials, account-building rewards
Finish the STAR DIVE! Starter Check-In
New-player login track
Reward Compasses
Complete An Adventure with Nyanners
Monster capture and Nyanners progression objectives
Reward Compass of Promise — a major source
Fill the Monster Capture Log
Capture the specified monsters and bosses
Reward Compass of Memory, enhancement materials
Complete the Adventurers' Proving Ground
One-time Conquest first-clear track
Reward 4★ Artifact Selector for the full track
Complete the Conquest Challenge Missions
Unlocks after Episode 5's "A Worthy Divine Maiden". Keep defeating the required Conquest bosses and difficulties
Complete the Dimensional Rift Challenge Missions
Also tied to Episode 5. Rewards for reaching and clearing the designated Rift levels
Complete Brisshell's Epic Quest
Brisshell was added in Version 1.3.0. Accept and play her Epic Quest from the bottom-left of the [Quest] screen once the prerequisite story is cleared
Reward Story content and Epic Quest rewards