I'm speechless
What an awesome top-down shooter! I loved it!
The visual style of the game is impressive and your power-up system is brilliant. You really did a good job fitting in the upgrade theme. The ennemies are really nice and the game itself becomes really frantic.
It's up there with the best shooters I played like Raiden, R-Type, Gradius etc. I got to the fourth level on my first try, gotta finish it now!
I'm making a space shooter like this in flash, you're game give me some inspiration but it also show that there is lots of work to come close to this.
Good job, I loved the game!!