Excellent game, needs refining
It is nice to see so many features used in this. I was stuck for a while trying to find out how you stored the variables until I came across the 'SharedObject.getLocal' script in the Flash resource. Very nice. I also like how you adjusted the volumes of each stereo channel to coincide with head movement. It is really nice seeing some fresh programming for new ideas. :)
Three drawbacks, though. First was the graphics. When optimising, I always weigh the rendering of vectors versus bitmaps and I feel the explosions, in particular, should have been bitmapped to reduce processing as well as size. I like to run most games full screen, so this is a big issue for me.
Second, the control menu needs a bit refining. Having to select a weapon at the beginning while the clock ticks did not settle well with me. Quick keys and/or starting the level with weapon in hand would be preferred. The time limits were short enough as is without having to fumble through the controls.
Finally, and I am sure plenty this has been covered, the game play could use some spice. Target practice alone gets a little stale after a short time. But this is an excellent start and I am sure others can take some of the ideas and build on them.