Just getting started:
You used the Magic Marker 25 times.

-This is one is not only self explanatory but is really easy.

-The easiest way to do this, is after recieving the Marker, you'll proceed down a path and come across a fallen tree. The old woman will tell you to use your marker to raise it. after you raise it destory the earth pillar by simply pressing the X button over it.

-after destorying the pillar, re-create one 24 more times.

-after that you have your acheivement.

-DICE