Demo : Contains additional resources which are not necessary for the tool itself. For example the Character and the Character spawner.
DungeonDatas : Contains the datas associated with the dungeons you will create. You can find the prefeb for the Dungeon and the DungeonCell inside DungeonDatas/ folder, the default Layouts inside the DungeonDatas/Layout/ folder and the datas associated with the default dungeon in the DungeonDatas/Datas/.
DungeonParts : Contains the prefabs made with the imported meshes. These prefabs will be parts of the dungeon (Walls, floors,...)
Editor : Contains the scripts wich are included only in the editor.
Scenes : Contains the default scenes : Main is the main demo scene and Visuals shows you all the Dungeon parts inculded in this package.
Scripts : The scripts for the tool
VisualAssets : The Imported Meshes, the materials, the textures and particles.