Achievement Guide to unlock the Cutting Corners, Charting Paths, & Cartographer Achievements.
Achievements
There are 3 related Achievements
Cutting Corner
Solved a level without placing all available rails (for a puzzle with no pre-placed removable rails)
Charting Paths
Solved 2 levels without placing all available rails (for a puzzle with no pre-placed removable rails)
Cartographer
Solved 3 levels without placing all available rails (for a puzzle with no pre-placed removable rails)
Level 3-10C
Place your track pieces according to the following image.

Level 4-6B
Place your track pieces using the following image

Level 5-3A
Place your tiles according to the following image

Thanks to Dbomb123 for his excellent guide, all credit to his effort. if this guide helps you, please support and rate it via Steam Community. enjoy the game.