Wooh, this update took longer than I expected. But I'm extremely happy with the results!

Below is a rather exhaustive list of the changes I made. I implemented what people have been e-mailing and messaging me about. I also added quality of life enhancements for your convenience!

UPDATE 1.1

• Major graphical overhaul
• Added a menu system
• Overhauled the high scores list
• Added a credits scene
• Added options
• Tweaked the Hellfighter enemy
• Tweaked the Fatty enemy
• Tweaked the Raider enemy
• Added the Solturret enemy
• Added the Helleye enemy
• Added difficulty options
• Added the sentry powerup
• Overhauled the enemy spawning logic
• Changed the sound effects, and added a few new ones
• Miscellaneous bug fixes
• Changed the logo
• Updated to pygame version 2.0.1 for faster performance

I hope you enjoy it, and I would love to hear your feedback!