Complex sentence: The player starts off in the middle of a maze-like level covered by fog of war, the first ten levels are a random mixture of trees and cacti, the next 10 are brick walls and the final ten are metal.
Split into simpler sentences: The player starts off in the middle of a maze level covered by the fog of war. The first ten levels are a random mixture of trees and cacti, the next 10 are brick walls and the final ten are metal.