I added some mountains and started working on the crowd places plus replacing the battlefield:

Final Version This is how I started: I used a Glossy shader for the Floor and Wall with the following node setup: After t...

This part is about the crowd places: Scene Asset: Houses The Tree Hair-Particle settings Next Step: Lightning, Animation ...

The final Image I started with the Hallway model and added a Camera to see where I have to place the different things in the Scene: ...

This post is about the Skybox :D This is how I created the Skybox-model for the Arena: ( https://youtu.be/r5ltULkror8 ) -> ...