I wanted to keep my level design very simple. I created 4 floors, and each floor has a unique layout. The green marker shows the path the player can take to get to the next floor. There will be the secret room where the scroll is and a locked room where the player has to go outside to get to the key to get to the scroll. To get to the next floor you have to go up a flight of stairs. The cubes represent a guard or enemy and the cylinders are furniture where the ninja can use to hide form enemies. I also create a terrace/ roof where the ninja can go outside the world and see the view from on top of the temple. The map is layer out, so the player goes up to the key and eventually has to come down to open the locked door.

Top Perspective View of 4 Floors.