Re: How do i edit terrain and materials?
There is no scene creation tool, you have to do that yourself(using paint or what have you).
Heres a link to get you going(
Click me(it appears that it assumes you have the art for the map ready so look for another tutorial if you don't know about how to make the terrain), but I do know what to do with the indestructible terrain. for the MAT layer(if you don't know what this is then learn about the various layers) draw everything in pure red(R255 B0 G0) this is the material for Test which is almost impossible to break unless you use a super weapon(even those might not be enough). I may be wrong, however in my years of lurking I think I've got a good idea on basic things like this.