When adding MouseEvent listeners to buttons, make sure you add the listener to the button itself and not the textfield. On the main menu you can see that you have to click on the letters, not the yellow circle, to progress.
3/5 - Good game and great concept, but randomised extraction points and guard paths make trying to do each level in under 30 seconds largely a matter of luck. As such the early level grind becomes such a chore that I didn't bother to try the hard levels.
Did you actually play this? Having such an awkward control system means you basically need 3 hands to play. Make left and right controls 'A' and 'D' and it might actually be playable.
Also there is no motivation not to spam the missiles. I would recommend an increased cool-down.
I'm always happy for people who make or upload a game, particularly their first. As a developer who's never managed to complete a game I understand why this isn't finished and how hard it is to make a game. However, I have rated the game on how good it is, not how much potential you have, which I think is only fair.