use w (up), a (left), s (down), d (right) to move. shoot in the direction of the mouse by left clicking. You have a short range pistol, unlimited ammo, and lots evil glowing thingies!!! A hit will add to your score, a miss will subtract from it. If you get hit by one of the glowing thingies, you lose a life and one of your guardian cats dies.
I was able to make the character "move around" on a bigger map by creating my own x/y coordinates for each object. I had to use pythagorean theorem to make the bullets move towards the mouse but use my x/y coordinates. I used the (direction) button to achieve this. Sadly, as far as i know, it is impossible for clones of objects to interact with clones of other objects outside of scratch's defined space because you cannot reach an objects private variable from another object. Therefore, the shooting range had to stay within the area of sight