Level 9

Difficulty

 * 4-costume cats can make this harder since you have 55 cats in total to destroy
 * Another Nut: Tall-Nut. Can protect more from cats from scratching
 * Destroying 4-costume cats is your goal to farm sun faster

Strategy

 * Plant as much Sunflowers and peashooters to make this easier
 * Plant many wallnuts and tallnuts to prevent cats scratch your plants.