Really cool idea of linking turrets together by shooting at them, but the linked turrets tend to be very erratic and don't always rotate like you do, it might be an improvement if all connected turrets aim at the cursor instead. Another suggestion is to let the player hold the mouse button to shoot instead of clicking it repeatedly it as that can be very uncomfortable.
I managed to run the game just fine (am on a Mac) and I suggest trying a WebGL export next time, that makes the game accessible to most people.