A Little to the Left

In a level press to bring up the pause menu.

Select "Hint."

You will receive the following achievement:


Now pick up the eraser and make sure you erase all the scribble in the page leaving behind only the hint itself. Once every erasable part has been erased, the achievement will pop.

Make sure you have already completed the game without using any Hints or Let it Be's (skip level) or you will need to reset your progress and start all over again - there is an achievement for completing the full game without using either of these!!!!

Helpful Hints and One Clean Page Achievement
Once you complete the game, start up any level and use Hint in the menu - erase the whole picture to also gain the One Clean Page along with Helpful Hints Achievement.

This guide will help you through all puzzles and all achievements in the game.

An example of using Hints can be found starting at 2:27:45.

A Little to the Left Walkthrough & All Solutions/Achievements