Kingdoms at war!

In this video I worked on creating my own simple clouds, calculating trajectories for cannons to shoot targets, using splines and making a bloom effect on the upgrade boxes. I had so much fun making this scene but I'm sure there's a lot more I could do to optimize pretty much every aspect of it.

How many of these questions can you answer? :)
Guess how many pieces are in this scene.
Where is the bear?
At what timeframes are the glitchy rocks?
Where is the safest place in the Blue kingdom?