This Achievement is normally done by completing the Fallen Kingdom within 10 Minutes but it is Reversed with the Achievement:
However to Unlock the Achievement Escape Artist you need to find the Elusive Purple Tree which is the only secret Achievement in the Game the Following video will show the exact Location where to find it. It is right at the start of the game after you get out of the city. Just get to the checkpoint in the video and climb up to the right.
Hope it Helps Cheers Guys