Answer:
Against the sun I protect your eyes and am often worn on the face of spies
I contain six letters, minus one and you got twelve. What am I?
I am wood that is neither hard straight or crooked
I drive men mad for love of me, easily beaten, never free. What am I?
In a tunnel of darkness lies a beast of iron. I can only attack when pulled back. What am I?
When is it bad luck to see a black cat?