Now that all the enemies and power-ups are done, I can work on finishing up the game.
I also got the Xbox control working with the game. I really like how the input system is handled for the control in XNA. Each joystick is nicely represented as a 2D Vector, with it's X and Y positions between -1.0 and 1.0. Although, I suppose it is alot easier to make a nice controller input system when only one controller is supported.
One nice feature of the game will be the multiplier. Similar to the one in Geometry Wars, the more ships you destroy, the higher the score multiplier goes. if you lose a life, the multiplier is reset. I liked that feature in Geometry Wars, so I'm going to have it here.