I liked that the author could use his sense of creativity, and could make it based on his country’s beliefs.

 I also noticed that the main element is teamwork.  Because when Gilgamesh was about to be killed by the bull of heaven, Enkidu jumped on the bull and distracted it so Gilgamesh could run away to kill the bull from behind.

I also learned that a long time ago, people used to believe that gods existed! Like Shamash the god of the sun. Or Ishtar the goddess of love.