If my instructions were unclear for anyone for using my textures or anyone elses, or just modifying them yourself,
if you want to change the look of the dungeons (walls, floors, outside area) then the place to look is The@Team > Base > Data > Shapes > Tiles
I'd recommend trying it out for yourself, and it's compatible with what Rotondo has shown so far with the new development :)
base.tile, closed.tile, forest.tile, green.tile, open.tile, and pathfound.tile are not currently in use from what I've seen.
Also, if I remember correctly, each square from left to right is less and less common, with some variation between sets. You can incorporate this to make for a more interesting set of textures with details that appear at different frequencies, such as supports on walls, lamps, imperfections in stone or metal, debris, or anything really.
The first row is the floor
The second row is the top part around the walls
The third row is the walls
The fourth row, the rightmost piece is used around the edges further still from the walls
The fifth row, the leftmost piece is the stairs, though I'm not sure exactly how they're managed, and the rightmost is the outermost vertical wall.
Correct me if I'm wrong on anything because I'd rather look like an idiot than lead anyone astray.