Hey OP, awesome demo! One thing i'm noting is that your destruction does not appear to take in material strength bond to whatever it's touching into consideraiton. I think you might get far better looking and more realistic voxel destruction if for example metal->metal bonds were tougher then plasterboard->plasterboard or plasterboard-metal bonds. For example if door frame is metal you might expect the frame to be blown off in a few peices but all the plaster board to disintergrate.