How does your submission match the theme?
Your gun is used to kill enemies and make all your manoeuvres. Enemies are a threat to the player, but if shot enough can be put into a weakened state in which they can either be shot to explode and kill other enemies or touched to harvest extra ammo and health. Colours contrast as to not blend different things together and follow a scheme for what they mean (e.g. red = damaging). Ammo is used to fire your guns and works as your scoring system - fire wisely!

Made for PC.

Third-party resources
Made with Game Maker Studio, uses 8bitoperator font, images made in Paint.net, sounds made in BFXR.

Contributors
Me: "Kittyandtiny".