Progression · Player guide
GRAIN ROT Quests and Progression
Follow the active quest log from the opening Outpost jobs through Quill’s story, the second-floor key arc and the current late-game objective.
Quest list and progression order
Objective wording can vary slightly by language and save state, but the current progression follows this practical order. Finish the visible turn-in before starting the next row.
| Order | Quest or milestone | What to do | Unlock or result |
|---|---|---|---|
| 1 | Clean Up | Buy the broom from Murch and clean three dirt piles | Introduces Outpost maintenance |
| 2 | Fixer Upper | Repair the broken wall with 50 Scrap | Continues Biggie’s opening tasks |
| 3 | Ball machine introduction | Use the three Artifacts and place the resulting ball in the mechanism | First structure blueprint |
| 4 | Introspection | Leave Scrappie with R and inspect in Spark form with the right mouse button | Teaches possession and inspection |
| 5 | Break & Build | Break six objects and build two structures | Opens normal building progress |
| 6 | Explore the Deep Layers | Descend, collect resources and extract | Starts the main run loop |
| 7 | Find Clues About the Ancients | Reach the Radio Tower facility, read all ten records and return to Quill | Advances Quill’s story |
| 8 | Biggie’s Friend | Find and safely return the required survivor from the Deep Layers | Leads into later Outpost progress |
| 9 | Second Floor Key arc | Complete the rescue and key objectives shown in the log | Opens the second Outpost floor |
| 10 | Upgrade the Shop | Place one structure in Biggie’s area and one in Murch’s workshop, then report to Tink | Artifacts, gold and story progress |
| 11 | Better Than New | Use the second-floor machine to improve an eligible item | Teaches upgrading and repair |
| 12 | Back in Business | Raise the requested second-floor room to level 3 | Advances floor restoration |
| 13 | Defeat a Corrupted Elite | Find the elite encounter and defeat The Big One | Completes the current late objective arc |
Inspect Objects Around the Outpost
Press R to leave the wooden vessel, move around the Outpost as the Spark and use the right mouse button on highlighted objects. Walking into rooms while still controlling the vessel does not complete the inspection.
If progress stops short, check the exterior area and every restored room before restarting the save.
Quill and the Radio Tower
Speak with Quill in the basement of the first building on the left after leaving the safehouse. For Find Clues About the Ancients, cross toward the Radio Tower, enter the facility around or beneath its base, read all ten records and return to Quill.
If a bunker or vault remains locked, return to Quill’s building and complete the research hand-in first.
Second-floor and late objectives
The second floor is tied to the rescue-and-key portion of the questline. Once open, Tink’s placement task, the repair and upgrade machine, room-level progress and the elite objective become the main blockers.
The third floor is not part of the normal launch progression. Its new questline belongs to the planned October Halloween update.
Fix a stuck quest
Read the exact objective, finish its turn-in conversation, check whether the host or client performed the action and confirm the save began in the full release. For an old demo or playtest save, test the same step in a fresh slot.
For a failed survivor rescue, do not continue grinding unrelated rooms. Reload, verify the quest state and repeat the objective with the elevator prepared before touching optional loot.
GRAIN ROT quest FAQ
Why did my quest stop progressing?
First confirm patch 1.09 or newer, the exact objective and whether the save began in the full release rather than the demo/playtest.
Is another questline coming?
The official roadmap planned a new questline with the October 2026 Halloween Update.
Helpful links
Official pages, patch notes and practical walkthroughs for additional context.
Keep reading
Complete the opening Outpost tasks, Quill’s story work and the rescue/key objectives in the quest log. Return to the giver after each step; the second-floor door opens through the completed quest chain. Once inside, Tink, room upgrades and the repair/enchantment machine become available.
Floor 3 StatusFloor 3 is not part of the normal launch progression as of September 2, 2026. The official roadmap says the October 2026 Halloween Update is planned to open the third Outpost floor and add a new questline, but it gives no exact day or unlock steps.
Beginner GuidePossess a vessel, descend in the elevator, gather useful resources or process furniture for gold, secure the extraction, and spend the haul on the Outpost. A broken vessel releases its Living Spark, but a full crew loss costs everything that was not already secured.
Latest UpdatePatch 1.09, released August 28, 2026, is the latest available build. It improves Grinder navigation, fixes the Vibe Modulator, changes resting recovery to percentage-based values and resolves several clipping and saved-item issues.