A few problems.
From what I've played of this, its pretty amazing for a flash game. The music is also really good, it reminded my of Metroid Prime 3.
The thing is though, I'm getting error codes every few seconds, I'm not sure if its just a problem with using it in Flash Player 10 or what.
The other problem with making a game like this in Flash is, unless you're on brand new hardware, the game lags so much its pretty much unplayable.
So great effort, and I hope you keep making stuff like this, but it still needs some work.