This game has been done like a million times on Newgrounds, we need no more

It's a pretty cool little game, I enjoy the Atari 2600 type graphics and I would suggest having the score meter displayed in those graphics too.
Allow there to be more than one bullet on the screen at any one time.
I'd also say it would be a good idea to make the foreground graphics into their own foreground layer to prevent the tanks from going in front of it unnaturally.
A minor complaint is the lack of explosions, for a game with thirteen exclamation points in the title, I'd expect some strobing "missile command" type explosions on destroying tanks, other planes, and yourself

Very nice game, it has pretty graphics which manage to look rather nice in their simplicity, the deconstruction/construction process is also rather effective, the new-age music is quite chill, I'd say the work that needs to be done would be to optimize the game for running in a browser window and preventing the arrow keys from scrolling the webpage while playing.
Nice little game