Full list of all 31 Railbound achievements. It takes around 4-5 hours to unlock all of the achievements in the base game on Windows.
The base game contains 23 achievements, and there are 2 DLC packs containing 8 achievements.
Found and completed the hidden level
Complete all bonus levels in World 8
Complete all base levels in World 8
Complete all bonus levels in World 7
Complete all base levels in World 7
Connected the trolley to the locomotive
Complete all bonus levels in World 6
Complete all base levels in World 6
Complete all bonus levels in World 5
Solved 3 levels without placing all available rails (for a puzzle with no pre-placed removable rails)
Complete all base levels in World 5
Complete all bonus levels in World 4
Solved 2 levels without placing all available rails (for a puzzle with no pre-placed removable rails)
Complete all base levels in World 4
Complete all bonus levels in World 3
Made 2 cars crash in the middle of a tunnel
Solved a level without placing all available rails (for a puzzle with no pre-placed removable rails)
Complete all base levels in World 3
Complete all bonus levels in World 2
Complete all base levels in World 2
Complete all bonus levels in World 1
Connected at least 3 cars in the wrong order
Complete all base levels in World 1
Completed all base levels in World 9
Completed all bonus levels in World 9
Completed all base levels in World 10
Completed all bonus levels in World 10
Completed all base levels in World 11
Completed all bonus levels in World 11
Completed all base levels in World 12
Completed all bonus levels in World 12