2.0 version update -Blood Moon Descent

1. Added level 6 advanced elements with attributes of Wind, Thunder, Water, and Fire: Death of Daedalus, Leize, Hell Creator, and Guardians of Siva

2. Add 81-100 waves of monsters: God's Will, God's Messenger

3. Add advanced elements: Ice Prison and Cloud Zeus

4. Added a new hidden element: the evil god Avata

5. New scene environment - Blood Moon

6. Modified the calculation method for percentage damage, now the damage value will be affected by the monster level

7. Reset Rank leaderboard

8. Other optimizations