Big 'thanks' for your reply :) I had very much fun on programming them! It also was the biggest part in the jam for me. Sadly, as I wrote on the games Itchpage, topics as balancing and feedback were bit rushed or did not make it. The Barrel is a placeable object. Just use "spacebar" in a free spot (green). You can use "r" to change Front or Back placement position. Fake walls are the same.