Managed to get a high score of 2475. This was a great game! The music and SFX were on point. The multitasking really stretched me to my limit. It starts off simple at first since you can see the enemies coming, but once you have 3+ enemies in each quadrant any semblance of a single plan goes out the window lol! I love how the different enemies each have their own unique mechanics. I began to analyze the difficulty of each so I knew which screens to focus on and which i could ignore for a short period of time. Also when that massive ship with the super laser came in I thought "Oh snap, It's about to go down!" I also liked the screen tearing effect as the ships took more and more damage.  One think I think would improve the game is if you allowed the character to aim with the mouse since I am used to that kind of moving and aiming style from other games. You could have it so that the mouse on one quadrant would cause the ship in that quadrant to aim at the mouse and then all of the other ships would fire at the same angle. 

Overall Very Well Done!