Secret! ha ha ha!
Go to my messages above to show you the zones of activity at y = -10. All the bombs are above the viewing line and behind Joey's self destruct zone to the left. You cannot settle the castle! It happens so fast, you probably don't see it. I didn't even have to support it with anything - too much work! There is a quirk to this method as I tried two templates and combined them. It didn't work.
Here is the experimental code for the self explosion!
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On Hidden Sniper 2, I didn't even put the lamp holders on anything but just let them hang there. Figured out where they ended up and put characters in their path. I wasn't happy with the castle I built and then moved, as those stupid arches have a mind of their own. I will do a better one later.
I know you can do better Theo - it will surprise the minions! One thing I thought of doing was putting the lamp holders above and let them drop down in a rein of terror - buahaha!