Level difficulty gradually increases. The initial levels are mainly used for players to familiarize themselves with the operations. Enemies are relatively weak and have a single attack pattern. As the levels progress, the types of enemies increase. They may have different weapon systems, shields, and mobility. At the same time, the level scenes will become more complex, and dangerous elements such as energy interference zones and hidden enemy turrets will appear, requiring players to continuously improve their shooting skills and strategic response abilities.