Hey everyone i've just started with apex and i'm making a destructive city like battlefield 3 back to karkand.......but when i import it to udk it has no shadows the texture resolution is worse then other models and when you shoot it it explodes i just want it to just fall apart depending on how strong the bullet impact is......for example a link gun will just chip off some parts but a vechile cicada missle will most like destroy the building entirely......and if it any can help me find a way to use a type of kactor physics on it so that when i shoot a the lower barrel out out of the barrels stacked on top of each other the other 2 on top will fall.....basically the top barrels rely on the bottom.....i dont use fracture mesh for buildings cause of it's collison that stays after the building is take down

Thank you