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
Solved 3 levels without placing all available rails (for a puzzle with no pre-placed removable rails)
Complete all bonus levels in World 8
Complete all bonus levels in World 7
Complete all bonus levels in World 6
Complete all base levels in World 8
Complete all bonus levels in World 5
Complete all base levels in World 7
Connected the trolley to the locomotive
Complete all base levels in World 6
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
Solved a level without placing all available rails (for a puzzle with no pre-placed removable rails)
Complete all bonus levels in World 2
Made 2 cars crash in the middle of a tunnel
Complete all bonus levels in World 1
Complete all base levels in World 3
Complete all base levels in World 2
Connected at least 3 cars in the wrong order
Complete all base levels in World 1
Completed all bonus levels in World 10
Completed all bonus levels in World 9
Completed all base levels in World 10
Completed all base levels in World 9
Completed all bonus levels in World 12
Completed all base levels in World 12
Completed all bonus levels in World 11
Completed all base levels in World 11