Cat Mail Co. 17-Achievement Checklist
One minute, every parcel has a clear job. The next, finished boxes and half-stamped strays have merged into one cardboard life-form. Before hunting achievements, make three small zones: unfinished, achievement attempt, and ready to route. That keeps one missed stamp from turning your post-office comeback into parcel soup.
The scanner is the parcel-inspection machine. A functional stamp marks a required property, while a decorative stamp is cosmetic. For identification achievements, inspect the parcel and apply the matching functional stamp. Storage and shipping may still matter to the parcel, but they are not extra conditions in the displayed achievement requirements.
| # | Achievement | Unlock requirement | Action checklist |
|---|---|---|---|
| 1 | Heave Ho | Correctly identify a heavy parcel. | State: inspection shows Heavy. Tool: scanner and Heavy stamp. Action: apply the Heavy stamp. |
| 2 | Iced whiskers | Open the cold refrigerated room. | State: refrigerated-room door closed. Tool: its progression key. Action: open the door; merely clearing space near it is not the achievement goal. |
| 3 | Be careful | Correctly identify a fragile parcel. | State: inspection shows Fragile. Tool: scanner and Fragile stamp. Action: apply the Fragile stamp. |
| 4 | Cats don't belong in water | Hidden: Fall into the water. | State: empty paws. Tool: none. Action: step into the water beside the dock or shoreline. Put the mail down first; the cardboard has suffered enough. |
| 5 | Keep it cold | Correctly identify a cold parcel. | State: inspection shows Cold. Tool: scanner and Cold stamp. Action: apply the Cold stamp. Move the parcel to refrigerated storage afterward as a separate handling step. |
| 6 | Until shipment do us part | Correctly identify a “lovers” parcel. | State: inspection marks the parcel as Lovers. Tool: scanner and Lovers stamp. Action: apply the Lovers stamp. Finding its partner at night and shipping the pair together are routing steps, not additional conditions named by the achievement. |
| 7 | From Cats Island with love | Place 1 decorative stamp. | State: any readable parcel. Tool: stamp mode. Action: place one decorative design without covering useful parcel information. |
| 8 | Night vision activated | Open the dark room. | State: dark-room door closed. Tool: its progression key. Action: open the door after the path and key become available. |
| 9 | Float Mail Co. | Place 30 parcels or more in the boat. | State: boat present. Tool: boat. Action: build the current load to at least 30 parcels. Small boxes and letters make the cardboard puzzle less feral. |
| 10 | Stamps hobbyist | Place 10 stamps on the same parcel. | State: one parcel reserved for the attempt. Tool: stamp mode. Action: place all 10 stamps on that one parcel; stamps spread across several parcels do not meet this requirement. |
| 11 | As good as new | Repair a parcel. | State: damaged parcel. Tool: repair workshop. Action: complete one repair, then return the parcel to normal inspection and routing. |
| 12 | Take off your furr | Open the hot heated room. | State: heated-room door closed. Tool: its progression key. Action: open the door after it becomes accessible. |
| 13 | Hot, hot, hot! | Correctly identify a hot parcel. | State: inspection shows Hot. Tool: scanner and Hot stamp. Action: apply the Hot stamp. Heated storage is a later routing step. |
| 14 | Heavy duty | Stamp 500 stamps on parcels in total. | State: cumulative stamp placements. Tool: stamp mode. Action: keep placing stamps on parcels until the total reaches 500. Do not assume every stamp category counts until the current build records it. |
| 15 | Sunbath siesta | Open the light room. | State: light-room door closed. Tool: its progression key. Action: open the door after the path and key become available. |
| 16 | A well deserved retirement | Spoiler — hidden: The exact condition is not shown. | Continue the late-story backlog sequence and check after each major story event. Do not treat freeing the former postman as a proven exact unlock moment. |
| 17 | All cleaned up | Empty the pile. | State: parcels remain in a story backlog pile. Action: work the backlog down to zero. The achievement text does not name a particular room, so check after each finite pile disappears. |
Exact Stamp and Boat Milestones
From Cats Island with love needs 1 decorative stamp. Stamps hobbyist needs 10 stamps on one parcel. Heavy duty needs 500 stamp placements in total. Float Mail Co. needs at least 30 parcels in the boat. These are four separate checks: ten stamps across ten boxes will not satisfy the one-parcel goal.
For the 30-parcel boat load, stage small ready parcels before loading. Count each parcel as it enters the boat. If parcel 27 starts a cardboard landslide, unload the loose layer and rebuild from a flat base. Patch #1 gave the boat more space, but irregular boxes remain stubbornly box-shaped.
Special Parcel Audit
- Heavy, Fragile, Cold, or Hot missing: Use a qualifying parcel, inspect it, and apply the matching functional stamp yourself.
- Lovers missing: Apply the Lovers stamp to the parcel identified by inspection. Use the nighttime device afterward when you need to find and route its partner.
- Repair missing: Complete the repair on a genuinely damaged parcel.
- Dark or Light missing: These achievements concern opening the rooms, not identifying a dark or light parcel.
Spoilers: Backlog and Ending
All cleaned up is the pile-clearing achievement. A well deserved retirement is the hidden late-story achievement. Keep processing the finite backlog rather than dumping it onto the floor; that only moves the cardboard boss fight three feet to the left.
The exact retirement trigger remains hidden, so check Steam after each late-story event. Keep a save from before the final backlog work when practical, especially in co-op.
Patch #1 Registration Risks and Safe Retries
The July 11 Patch #1 reduced the cold- and hot-room piles, enlarged the boat, and restored a missing break-room key when loading an eligible save. It did not name fixes for achievement counters or for the refrigerated, dark, heated, and light-room achievements.
Imported demo saves can reach a cleared later-room path without producing the expected key. In co-op, a non-host can also miss All cleaned up when the host clears the pile. Use these safe retries without deleting a completed office:
- Finish the shift and allow the game to save, then restart Cat Mail Co. and Steam.
- For a parcel-state achievement, use a fresh qualifying parcel and place the matching stamp yourself in a solo or host-controlled session.
- For Float Mail Co., unload below 30, then place the thirtieth parcel again after restarting.
- For stamp goals, make new stamp placements instead of waiting for an old save state to update.
- For a missing room key, preserve the affected save. Patch #1 only names the break-room-key fix.
- If a room, pile, or story event has already passed without an unlock, keep that save and use a separate fresh-retail solo run for the missing one-time check.
These retry steps are cautious recovery options, not guarantees for future patches.
Are Any Achievements Missable?
Endless mode continues after the story, which gives you room to clean up repeatable stamp, parcel, water, repair, and boat actions. It does not guarantee that a room opening, cleared pile, or hidden story event will trigger again. Treat the four room achievements, All cleaned up, and A well deserved retirement as potentially missable on an affected co-op-client or imported-demo save.
Final 17-of-17 Audit
- Parcel properties: Heave Ho, Be careful, Keep it cold, Until shipment do us part, and Hot, hot, hot!
- Room doors: Iced whiskers, Night vision activated, Take off your furr, and Sunbath siesta.
- Stamp totals: From Cats Island with love, Stamps hobbyist, and Heavy duty.
- Boat load: Float Mail Co. needs at least 30 parcels aboard.
- Water and repair: Cats don't belong in water and As good as new.
- Backlog: All cleaned up requires an emptied pile.
- Hidden late story: A well deserved retirement has no displayed exact condition; check after each major ending event.
Once every row is checked, you have turned Cat Mail Co.'s neglected mountain into a working little postal machine—one scan, stamp, shelf, and slightly overpacked boat at a time.
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