Down the Hole!

Difficulty: Very Easy

Down the Hole! is an achievement for the older iPad version. In a recent iPad update, it was replaced by Peking Express, but kept its older icon. To unlock it, simply go to the Achievements menu, and scroll down. You should see Zombie China. That's all you have to do. You can get this achievement even before you start Adventure mode. It is based on the myth, that if you dig a hole deep enough, you'd see China.

Trivia

 * The Chinese letter in the icon of the achievement is "爱" (ai), which means "love".
 * While going down the hole, you can also see lots of other references to PopCap Games. (see Achievements for all of them)
 * This is also a reference to the phrase "digging a hole to China".