There is actually a lot of splines used thats shown in those pictures, so I'm a bit confused on what you mean.
While most are objects (Walls, trees, bushes, gravestones, the rocks on the side of the river)
There are some textures with the road, path in the grave yard. Though there is one area you can't see with a cobblestone texture blended for a path to the castle.
Not really sure what else I could use, as mud or ruts from vehicles wouldn't really work on a brick urban setting.
I do want to put an invisible spline around the river walls to provide some sort of cover however.
For splats I did use a blend of brick and concrete around the map, just more blended so it doesn't stand out much. Grass I used a combination of dark grass and patchy grass, though I'd admit it could be blended better.
But like I said, second map, still learning what I could use/knowing whats available to use.
More screenshots
Relic Entertainment
cblanco ★ 
보드카 중대 
VonManteuffel 
Heartless Jäger 
