Thumbs Up Kittens

Cats have developed opposable thumbs and want to dominate the world. They are able to feed themselves and surf on the internet. They started stealing cans of tuna in supermarkets. You are the last bulwark between them and their food. You have to protect it. Your engineer studies gave you the laser’s knowledge and you started building up beam turrets. As an intern, your boss ran away and let you take the responsibility of this fight. You don’t want to lose this job cause it pays you tuition fees so here you go!