Create a new scene with Node as root
Add a TextureRect as child
Rename it to ReferenceMaze
Add a TileMapLayer as child
Select TileSet in bottom panel
Under Tile Sources add wall_atlas.png
Allow creation of the Atlas
Set the Texture Region Size to 32 x 32
Now switch over to the TileMap tab
Use the tiles provided to
Paint over the reference map
In Project Settings > Layer Names > 2D Physics
Rename the layers to represent the game objects
That live on those layers
We must add a physics layer to the TileMapLayer
Now we must paint the collision shapes on each tile
Select TileSet in the bottom panel
Paint the shape of each tile
Add a Camera2D as a child
Set the zoom level to 0.812
Position the Camera2D Centrally