WASD to move, IJKL or arrow keys to shoot. Avoid and shoot the enemies, each enemy you shoot increases your score. Power-ups: Occasionally, enemies will drop power-ups. Triple Shot (2%): For your next 20 shots, you will shoot 3 bullets instead of 1. Large Bullets (2%): Bullets are twice as large for the next 20 shots. Meltdown (1%): For the next 5 shots, you shoot in all directions and are generally OP.
credits: @CollectibleEgga @TofuToast @bobthebus