Meh...
It was ok but not something I would play again. It would be nice if you had some room to move on the screen instead of having a million bullets on the screen with the baddies coming at you from every angle where no matter where you move you get hit and the don't fire to charge weapons thing has got to go. Toss in a power up that fills up the power bar a little at a time and then press space or something to use it when you really need it. Also the mouse control/fire setup is a bad move. Switch out the mouse for WASD or even arrow key control and use A or S or something to shoot.
Make a few improvments on the controls, the power ups, and the ammount of bullets on the screen and this might become a great game. One more thng--add a health bar..the 3 hit and die thing is really annoying since you get hit 3 times just a few seconds into the game with a million bullets on the screen at once.