Whack-a-Zombie

This level is really strange: the sun comes from zombies. No plants are used to kill the zombies either; they are whacked using mallets. Except maybe your exploders. Note the similarity to Stage 2-5.

Plants

 * Potato Mine
 * Grave Buster
 * CHerry Bomb

Zombies

 * Zombie
 * Conehead Zombie
 * Buckethead Zombie

Strategy
Like the game says, whack the zombies. That is, tap/click on them whenever they appear. Coneheads take two, while Bucketheads three. When you get sun, use it in the form of a Grave Buster.