1. Add three new levels of difficulty: alpha, beta, and gamma 2. More than 10 new types of enemy aircraft corresponding to different difficulty map scenes have been added 3. New player bullet model - "Lightning" bullet and its effects 4. New captured pets for players in combat scenes - players need to complete this difficulty level to obtain them 5. The effect of capturing different enemy aircraft in new combat scenarios 6. New page "Control Room" - "Operating Manual" 7. Redo the loading screen before the start of the battle scene, including the battle settlement page 8. Optimize some static images and convert them into animations 9. Optimize game tips and guidance