You know what I'm impressed, considering your circumstances, and that it's your first game in Unity it's better than many other beginner games where they have tried to over complicate it and stuffed it up. You have a very basic form of AI and the music is cool. If you had only changed it so instead of being trapped in a square, you ran away via a path where you have to dodge different obstacles (which could just be shapes), this would probably have done quite well. I liked the Virus enemy, just felt like I was playing peek a boo he he