i nearly jumped out of my chair the first time
fun level, if a little dangerous

i need help with 2 of the bonus coins though, i gave up trying to find them and had a sneaky look in the editor

and they seem to be in a solid wall, i've tried rolling boulders at them and i can't see how you can hit them with cannon fire

i'm obviously missing something as others have completed it, can i have a hint please?
