Update #2

-  Several rework and rebalance

- Shop UI improved.

- Enemy modifier and Choose World UI improved.

- Optimization with bullet impact is worked on it. (Will work on Object Pool so that the enemies won't lag the game)

New Content

- Drone mechanics added. It has 4 mechanics written below:

    Split : Bullet splits into new bullets and scatters. Every added split will increase the count of the new bullets

    Pierce: Bullets damage and pierce on bullet impact. Every added Pierce will increase the pierced enemies.

    Chain: Bullets bounce onto the next enemy after the impact. Every added chain will increased the next chained enemy.

     Max Projectile: Increases number of the bullet.

- Drone Mechanics is unlocked after reaching Difficulty Level 10.