flyingnun's a piece harsh but it is quite rubbish.
Spending more time on the development process might be a good idea...
The graphics could use 'a bit' of work and try adding some sound.
Author Comments
Move the gun using the mouse, and click on the zombies to shoot them. If you hit your victim several times your victim is killed. If you play for 30 seconds you can update your gun with the money earned.You can also earn points by hitting the graves.
If you complete all the updates the game ends.