Yep, everything was done in blender and gimp. I will have to ask the composer which packs he uses
PhysX = a free tool which allows you to create destructible meshes + cloth simulation -> ?v=f51dzGXyYIg ?v=I7ESwjlOZkY You can either use the SDK or the plugin for 3ds or maya
I personally use real world sounds for such stuff -> then I cut them in sony vegas (probably not the most professional way, but it works :p)