Using Rust, but otherwise dead on the money. Grab a screenshot; find and group nearby blue pixels, so that I get one screen-position per enemy, rather than a 100 haha; then queue up some clicks for each enemy position, making sure there is enough time between clicks otherwise bullets won't spawn for whatever reason.
You're game has a very professional quality to it, especially with the menu and sounds. I'd love to see this concept explored further in some capacity