I also enjoy space shooters. And this one is looking good.
Some ideas and things I noticed.
Instead having the point the total popup when ever you kill an enemy maybe above each enemy killed put the point value gained such as +100
Your spaceship moves a little too fast when you press the keys any direction.
Maybe have the enemies speed up as the game goes on (Can't wait till next version when they shoot).
I notice a little jerky animation when enemies are coming towards you.
One more thing don't allow your spaceship to go outside your feild of view.
Otherwise keep up the good work and I forward to your updates.
VisualBasicZone