I really like your game. It was pretty fun!
I just didn't understand if the point of the game was just surviving or shooting with each ship each enemy ship that matched its color. I didn't notice any difference, so I just ended up rotating and going in circles the whole time trying not to die. So it got a little bit boring for me.
This is my personal observation so I hope you don't take it personally.
It is a great game and I hope it taught you some valuable lessons. Take care n.n