Buy Cats to defend against the powerful dogs coming to fight you on the battlefield. You can use the Kitty; the soldier that is the youngest and attacks quickly. You can also use the Brawler; The Brawler is a cat meant for damage but attacks slowly. And there is the sniper; He has average attack speed and he has full map range. Farmer generates cash. Medic autogenerates lives.
Dont forget to heart and star this game, It would help. I'd Reccomend to play on TurboWarp for infinite clone limit. This is an obsolete game. Go play Tower Defense Game 2 https://scratch.mit.edu/projects/1012832966/