Totally Nuts

Totally Nuts is fourth level of I, Zombie. The zombies available are Zombie, Buckethead Zombie and Ladder Zombie. The plants in the level are Peashooter, Sunflower, Snow Pea, Fume-shroom and Wall-nut.

Strategy
Use the Ladder Zombie to to climb over the Wall-nuts. They also are immune to the Snow Pea's freezing effect (with their ladder), so use him there too. A single Ladder Zombie can survive in a row with a single Peashooter or Snow Pea (If it's placed directly next to the Wall-nuts), Even without it's ladder. But the Ladder Zombie's shield doesn't protect him from the Fume-shroom's fumes, use Buckethead Zombies there instead.