First Off
In order to unlock the secret level that will give you the achievement you need to complete all levels, including bonus levels . You just need to complete the story (not bonus levels).
View Credits
Click on the construction guy at the top left of the screen (or press F2).
End Of Credits
At the end of the credits, you'll see a ticket. Click on it to take you to the secret level.
Solution
Thanks to Originally posted by breezy: Here's the updated solution.
Here's how I solved the level. (Outdated)
That's It!
Once you solve the secret level you will get the Final Stop achievement.
Final Stop
Found and completed the hidden level
Source: https://steamcommunity.com/sharedfiles/filedetails/?id=2859903538
More Railbound guilds
- All Guilds
- Cartographer Achievement Guide
- Railbound Walkthrough
- "" v1.02 Final Stop Achievement Guide for v1.02