This can be attained on "Location 1 - Ninjago City North". Simply pull down the materials required (press B) to construct a catapult, jump onto a bomb (press Y) and manoeuvre into position.
Use Cole to launch the bomb and destroy the wall leading to a new route and to the Character Token (Kai Classic).
Proceed upward and swing across the gap and run up the wall (press A). Move along this section and slide down into the Red Scroll (Master of Detection).