I do not like it when a game goes full screen without checking with me. Right off the bat that's annoying. Setting that aside, initially, I found that I got no instruction annoying. If you did tell me how to fire, it was subtle enough that I missed it. I had to find the key myself. One I had figured that out, I got killed a few times, but that was just me learning how to play. I think you struck a really good balance with the control, and the ratio between player speed VS enemy speed. That must have take a lot of fine tuning! Honestly I could see putting in hours to get really good at this. The semi 3 dimensional top down remake of Asteroids vibe is kind of innovative for something so derivative. Nice.