Level 1 of the Extreme Theme should not be too big challenge for the most players. For my experience, the money is enough at the beginning. So you can create a rocket tower at the right bottom corner of the screen. You can get several weapons during attacking the monsters. The only possible to prevent you from getting a golden carrot is a little boss in the wave 10 monsters. You should pay more attention to it, then you can get the golden carrot easily.