Use AWSD or arrow keys to move. The turret will follow the mouse. Click or press space to fire. Your health will regenerate over time. Collect crates to get burst, rapid fire, shotgun and missile powerups. When the missile locks, it will automatically fire at the enemy. When you have missile, you can still fire normally.
Sound effects from pixabay. Music from fesliyan studios. Comment any suggestions or problems you encounter below.