Castle of Elite - Official game guide|
Introduction - Basics - Solutions - Secrets - Trivia
When the guide tells you to place a brick symbol on a certain square, it means you should aim the mouse cursor on that square.
1-12: The test
A: Jump over this switch, and hit the next one instead.
B: Place the symbol here, then quickly destroy the brick at C. The Trundler will hit the yellow switch.
D: Get the dot symbol and place it here.
E: Get the Jump boots and get this symbol.
F: Place the symbol here. Use the green and blue teleporters to get here yourself.