World 3 - Level 6
You will need to reflect fireballs into the two hallways to the North and South in order to destroy all obstacles in your way. To do so, move the "1" Reflector just to the left of the yellow button, and the "2" Reflector into the level center. Time your moves very carefully, neither Stinky nor the Reflector can be caught by the spikes. Now push the "1" Reflector to the right onto the yellow button and destroy the box and the Kaboom! to the south.
Switch the Reflector positions to destroy the boxes along the north corridor. Collect all coins and exit.