Unreal Editor 4 to Blender 2.70

My problem depends on simpler 3d character editing especially Jazz Jackrabbit Kismet edition.Maybe I’m inexperienced 3d artist and programmer without makehuman application,but I don’t think it’s very difficult process.How do I make smoother Jazz Jackrabbit 3D subdivision surface of maps and characters from Blender to Unreal Editor 4 and vice versa?

Founded in 2004, Leakfree.org became one of the first online communities dedicated to Valve’s Source engine development. It is more famously known for the formation of Black Mesa: Source under the 'Leakfree Modification Team' handle in September 2004.