Hall of Infinite Doors

As you play more and more, the time for the camp to end draws closer and closer. Slowly, weary parents come to pick up their kids one-by-one. In the end, all of the kids excluding your target have been picked up by their parents. The counsellers seem to ingore the fact that a kid remains and leave the park. What luck! What luck what luck! You have the boy all to yourself. But how to convince him to come with you? Keep in mind your target is somewhere around 10 years old.