I have this one build for archer:
The classes are: Archer -> QS -> Sapper -> Scout.
The idea is total control of the territory around you. Skills that you put on the ground takes priority. You can advance any of the 4 classes that I listed to its C2 or even C3, depends on your preferances, but no other classes or you will be too diverse to be effective.
Unless you can get in and out safely from the battle field, then I suggest to not remove Scout from this build.
I am yet to post any of my complete build, tho, Iām not going to unless I tested it myself.