The only difficulty here is that the zombies' power is slightly higher than usual.
Mummy Zombie x3
Fighting Power: 349
First Strike: --
Attack: Deals damage to target.
Skill: The zombie uses its bandage whirlwind to attack, posing a threat to enemies in front of it.
Leader Skill: [Primary militantness high]
Follow the tutorial, drag the plants you need into the lawn and you should win.