I should start off by saying I do NOT play many plane/flight sim games, so I may not be the right person to review this type of thing.
Right off the bat, I really liked the visuals and sound. You definitely nailed that part.
The biggest issue I ran into was the controls. Like I said, I don't play this type of game much, but using A and D to move horizontally felt awkward to me. I'm used to moving the mouse left and right for that. Moving around and especially aiming were difficult.
I died a whole bunch of times while I was trying to destroy all the enemies (the "OH CRAP" made me laugh). I had a lot of trouble avoiding enemy missiles. I assumed I'd be able to shoot them out of the air, but that doesn't seem to be the case.