Here are my plans
Basic Castle
Guardhouse Stables (Level 1)
Detail Castle
Elevation Views of Castle
Here is a level plan for the detail of the Guardhouse Stables

To explain, the player comes down the stairs, and sees the cat. They go into the tunnels, and come out on the other side of the cat, who gives chase. The player hides behind a barrel, and the cat proceeds into the stable, where it has a “patrol” (direction may be changed later). The player enters the stables through a tunnel behind the barrel. They then circle around the stable, hiding in straw or behind posts until they reach the dog. They then proceed around the stable some more, climbing the rails of the stable to get to a tunnel higher up, where they can escape the stable.
Here are Unity Screenshots of my castle so far.



Here’s another area, a cellar tutorial. It will teach about the cat, hiding spots, and general movement.
(Level 0)
Other levels which are hard to draw:
There will be a level (level 2) where you are being chased up the stairs of the steeple (pointed tower in elevation drawings), where you run up a spiral staircase, occasionally using the supports of the stairs to get a bit ahead. At the end, you meet the bird, who gives you a lift to the final level, the royal tower (blocky tower in elevation drawings). Because of it’s vertical and horizontal layout, I was unsure of how to draw it.
Similarly, the final level is running down from the top of the royal tower to the queen in the throne room, where you can prove the truth of the cat’s betrayal. Because of the time it would take the cat to get from the top of the belltower to the top of the queen’s tower, the first half or so is primarily platforming with assets. I do not know how many assets I will be able to make, so It is hard to explain how the level would work.
There are 4 primary levels, but more are possible. It all depends on the time left at the end.