Hi!
I really enjoyed your game.
The graphics were coherent and fit very well.
The audio was not annoying but gave the whole game that extra something.
I played through the easy mode and the win animation looked good too.
I also liked that you destroy the projectiles when you get hit. This gives you a short breather or can get you out of tricky situations.
What I didn't like so much were the different projectiles. The green one was pretty useless in itself, it just dragged out the game.
Also, the projectiles were not fast enough for me. It takes forever for the game to pick up speed, which is very frustrating if you were close to winning.
I find the theme a little underrepresented, I understand that the earth is only protected by two sides and you basically have two sides in the war, but somehow it seems not enough to me.
But that's just complaining on a high level. A very good entry.