This achievement requires that you use a cumulative total of 5,000 bamboo sticks. If you use guides, you will likely not have this upon completing the game. The easiest way to grind bamboo usage is to load up any level and keep placing and erasing the same few bamboo sticks (by repeatedly tapping a cluster of sticks rapidly). You do not even need to pay attention while doing this, just keep repeated touching the same part of the screen. It should take less than 15 minutes of solid tapping to unlock this.