In Normal mode, the player has to reach 2000 points.
(Crazy Dave and Penny appears)
Crazy Dave: I have trypophobia! There's too many sewers!
Penny: My detector says that there are plants and zombies in the sewers.
Crazy Dave: Are there springs in the sewers?
Penny: There are none, User Dave.
Penny: Use a mallet to kill zombies. Killing them will give you points. Hiting plants would deduct your score. Reach the target score to continue.
Penny: You can get a Power Doubler Mallet for coins, they double your score when you hit a zombie.
Penny: You can get a Power Super Doubler Mallet for gems, they double your score when you hit a zombie or a plant.
(Crazy Dave and Penny leaves)
In hard mode, the player has to reach 4200 points.
- This is the only level to have white stripes around the sphere, despite the fact that there are other several levels with brain buster.
- It might be because this level features the exclusive brain buster of the current world.