My data shows that a local cattle has been turned into a zombie.
In the Normal Mode of this level, the player has to beat Cowboy Zombies at Level 1.
Penny: My data shows that a local cattle has been turned into a zombie.
(Crazy Dave appears)
Crazy Dave: Which means we can eat beef?
(Crazy Dave and Penny leave)
(After receiving the note)
Penny: This poster shows that the zombies are coming up with a plan to eat the brains.
Crazy Dave: Oh! My brain turns out to be so worthy.
Penny: Not necessarily. It says they don't want brains of crazy people up there.
This level is very similar to previous levels, with the three common types of zombies, the Prospector Zombie and Poncho Zombie. The main focus is to kill Poncho Zombie as soon as possible, and as efficiently as possible. Using minecarts in conjunction with powerful plants can help. Buckethead Cowboy makes one appearance here. Do the same thing as dealing with Poncho Zombie. And for Prospector Zombie, the last minecart will do the trick for one single attack plant. Ice plants or Spikeweed will help too.
In the Hard Mode of this level, the player has to beat the zombies at Level 2 or above, along with no lawn mowers.
Level 2 Prospector Zombies can be problematic, as the player likely does not have a Level 2 Split Pea yet. Except when the player has obtained the Level 2 Spikeweed, a Level 2 attack plant that can attack backwards, like Magic Mushroom or Cactus, is recommended.
The Level 2 zombie horde along with the Level 2 Poncho Zombie can cause the player's defense to break apart. The player should use strong attacking combos along with leveled-up defense plants.
The player likely to not have a Level 2 Chili Bean, which means he/she has to use a powerful attacking combo against them.
Do whatever you need to do to get ready. Plant Toadstools, Snow Peas and Magic Mushrooms to attack the zombies. Use Wall-nut to defend yourself from being eaten if needed. Use Plant Food on Toadstool or Magic Mushroom.