Plants vs Zombies Stage 2-1 introduces ‘Puff Shroom’ that awakes during night time! It does not require any Sunlight, making it very useful against early Zombie invasion especially basic Zombies! However, with its limited range, it could not attack Zombies from afar. It could buy some time to plant more powerful plants against tougher Zombies as the stage progresses. Completing this stage unlocks ‘Sun Shroom’!
Plant 2 columns of Sunflowers while Puff Shroom are planted whenever the first Zombie arrive on that lane. Have at least 2 Puff Shroom guarding each lane to easily take out a basic zombie. This stage introduces ‘Newspaper Zombie’ that uses the paper as a shield against projectiles such as the one shot from ‘Pea Shooter’ and ‘Puff Shroom’. He will grunt and moves double the speed when his newspaper is destroyed. A Chomper can easily devour Newspaper Zombie, leaving basic Zombies for Puff Shroom to battle.
Zombies: Zombie, Newspaper Zombie
Plants: Sunflower, Puff Shroom, Cherry Bomb, Snow Pea, Walnut, Chomper
Unlocks: Sun Shroom
Final Layout

Plants vs Zombies Stage 2-2 introduces Sun-Shroom, a mini plant that produces small amount of sunlight. Once it matured, it produces the same amount of Sunlight as Sunflower. Completing this stage unlocks Puff Shroom brother, Fume Shroom! With Sun Shroom low Sunlight cost, you can fill your front yard with these little guys quickly compared to Sunflower.
Plant 3 columns of Sun Shroom while protecting these defenseless sunlight producers with Puff Shroom. Plant Puff Shroom on the lane where the first Zombie appears. Stack up to 3 Puff Shrooms in a lane to handle ‘Newspaper Zombie’ and ‘Conehead Zombie’.
After amassing Sun Shroom, plant 1 column of Snow Pea, Chomper and Repeater in sequence. Chomper will be sufficient to deal with Buckethead Zombies, while Repeater and Snow Pea will deal with Conehead Zombie and Newspaper Zombie. Dig up Sun Shroom to make space for another column of Repeaters! Use Cherry Bomb to destroy zombies that appear from graveyard to prevent sudden rush of zombies.
Zombies: Zombie, Conehead Zombie, Buckethead Zombie, Newspaper Zombie.
Plants: Sun Shroom, Puff Shroom, Snow Pea, Chomper, Repeater, Cherry Bomb.
Unlocks: Fume Shroom.
Final Layout

Video Walkthrough
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Plants vs Zombies Stage 2-3 introduces Fume Shroom that sprays purple bubble fume towards zombies. This fume is capable of hitting multiple zombies and it can penetrate the shield wielded by ‘Screen Door Zombie’. Repeaters nor Snow Pea would be not be any more efficient than Fume Shroom itself, plus its a little more cheaper than the primary attacking plants.
Build 2 columns of Sun Shroom instead of 3 since Fume Shroom cost less Sunlight compared to daytime plants. Next build 2 columns of Fume Shroom, backing up the Puff Shroom that was earlier placed to prevent early zombie invasion.
Zombies: Zombie, Conehead Zombie, Screen Door Zombie.
Plants: Sun Shroom, Puff Shroom, Fume Shroom, Snow Pea, Chomper, Cherry Bomb.
Unlocks: Grave Buster
Final Layout

Video Walkthrough
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Plants vs Zombies Stage 2-4 Your neighbor Dave will sell you an extra seed slot for $750 on this stage. Purchase it to allow more seed slot to be used during battle against Zombies!
This stage introduces Grave Buster that has the ability to remove Grave Tombs that appeared in your front yard during nighttime. Busting the grave tombs will reward you some silver coins, and occasionally gold coins. These coins can be use to purchase stuff from Dave such as extra seed slot and plant’s upgrade.
Build 2 columns of Sun Shroom followed by either 4 columns of Fume Shroom or 3 columns of Fume Shroom supported by Snow Pea. You can have Puff Shroom a little closer to the right with 1 vacant tile between your primary plants to force Pole Vault Zombies from ever running too fast to your plants!
Zombies: Zombie, Conehead Zombie, Screen Door Zombie, Pole Vault Zombie.
Plants: Sun Shroom, Puff Shroom, Fume Shroom, Snow Pea, Grave Buster, Cherry Bomb.
Unlocks: Suburban Almanac (Keeps track of all plants and zombies you encounter)
Final Layout

Video Walkthrough
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Plants vs Zombies Stage 2-5 introduces another new mini game where you smash zombie heads with a hammer! Occasionally, thees zombies will drop Sunlight or Coins. Removing their grave tombs will also reward you with nice valuable coins. Buy Grave Buster using the Sunlight you scavenged from the dead to remove the Grave Tombs from your front yard, otherwise you will be overwhelm by the number of zombies invading during nighttime!
Zombies: Zombie, Conehead Zombie, Buckethead Zombie.
Plants: Potato Mine, Grave Buster, Cherry Bomb.
Unlocks: Hypno Shroom.
Final Layout

Video Walkthrough
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Plants vs Zombies Stage 2-6 introduces a new zombie who loves football! It wears a metal headgear which reduces damage taken from attacking plants! Our Shrooms are no match for these powerful zombies. Therefore, instead of fighting them using brute strength, why not make them as ally instead? That is where Hypno Shroom comes into play! Hypnotize powerful zombies such as Headwear Zombie by allowing them to have a piece of Hypno Shroom. Once eaten, Hypno Shroom vanishes from soil and takes control of the zombie who has eaten him.
As practiced in previous stage, build 3 columns of Sun Shrooms to have extra Sunlight to produce better defenses such as Fume Shroom while funding Grave Buster to remove annoying tombs that pops around your front yard. You can have 2 columns of Sun Shrooms, but it will be much slower to fund these two at the same time.
Zombies: Zombie, Conehead Zombie, Headwear Zombie.
Plants: Sun Shroom, Puff Shroom, Fume Shroom, Grave Buster, Hypno Shroom, Walnut, Cherry Bomb.
Unlocks: Scaredy Shroom.
Final Layout

Video Walkthrough
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Plants vs Zombies Stage 2-7 introduces Scaredy Shroom! A Shroom that attacks similarly to a Pea Shooter but burrows halfway underground whenever a zombie approaches really close, making it defenseless like Sunflower. It makes a great combination with either Puff Shroom and Fume Shroom possessing limited attacking range. Have a plant in front of Scaredy Shroom to prevent it from hiding itself into the soil.
Plant 2 columns of Sun Shrooms, followed by 2 columns of Scaredy Shrooms and 1 column of Fume Shroom. Fill in the vacant gaps with Puff Shroom since it does not cost any Sunlight. This setup alone supported with Hypno Shroom is able to win this stage much easily compared to previous stages. There are possibilities that more than 1 tough zombie appears during invasion, so we can’t solely rely on Hypno Shroom. Hold off the zombie mobs with Walnut and knockout zombies with your other attacking Shrooms.
Zombies: Zombie, Conehead Zombie, Screen Door Zombie, Headwear Zombie.
Plants: Sun Shroom, Puff Shroom, Fume Shroom, Grave Buster, Hypno Shroom, Walnut, Scaredy Shroom.
Unlocks: Ice Shroom.
Final Layout

Video Walkthrough
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Plants vs Zombies Stage 2-8 introduces a Dancing Zombie, a parody of Michael Jackson (a zombie with black hair and red suit). However, it was change by Pop Cap due to legal reasons that they have to abide by ‘The Estate of Michael Jackson’. This Dancing Zombie has the ability to summon 4 backup dancers into play, which can quickly overwhelm all of your plants unless the ain dancer is being defeated quickly. It would be fairly difficult to get Hypno Shroom on the main dancer unless there is a vacant soil below him.
Plant 2 columns of SunShrooms and use Scaredy Shrooms to aid Puff Shroom. This stage can be cleared quickly without the need of Fume Shroom. Freeze all zombies in your front yard using Ice Shroom to buy some time for Scaredy Shroom to knockout Dancing Zombie and its lackeys.
Zombies: Zombie, Conehead Zombie, Screen Door Zombie, Headwear Zombie.
Plants: Sun Shroom, Puff Shroom, Fume Shroom, Grave Buster, Hypno Shroom, Walnut, Scaredy Shroom.
Unlocks: Ice Shroom.
Final Layout

Video Walkthrough
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Plants vs Zombies Stage 2-9 introduces Doom Shroom, a 1 time use plant similarly to Cherry Bomb. It destroys all zombies in a big area, leaving a crater behind. This crater prevents you from placing any plant in that soil until it has been recovered after for some time. Apply the same strategy as before, 2 columns of Sun Shroomoms, Scaredy Shrooms and Fume Shrooms.
Upon completing this stage, you will receive a note from zombie ‘Hello, We wood like to visit for a midnight znack. How does ice cream and brains zound? Sincerely, the zombies. This means its an all-out zombie attack!
Zombies: Zombie, Conehead Zombie, Screen Door Zombie, Headwear Zombie.
Plants: Sun Shroom, Puff Shroom, Fume Shroom, Grave Buster, Hypno Shroom, Doom Shroom, Scaredy Shroom.
Unlocks: Note from Zombie.
Final Layout

Video Walkthrough
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Plants vs Zombies Stage 2-10 invites all zombies at nighttime for a full-scale attack! By successfully preventing them here will crush their hope in ever getting into the house through front yard. You will be supplied with random plants through a conveyor-belt, so you are less burden in gathering Sunlight to produce plants.
Plant Scaredy Shroom in the first 3 columns from house, followed by 3 columns of Fume Shroom. Plant Puff Shroom in front of Fume Shroom to protect them. Reserve Hypno Shroom for tougher enemies such as Headgear Zombie (Red Shirt Footballer) or any zombies that are too close for comfort. Finally, spam Doom Shroom on the final wave to complete this stage instantly.
Zombies: Zombie, Conehead Zombie, Screen Door Zombie, Headwear Zombie, Dancing Zombie.
Plants: Puff Shroom, Fume Shroom, Grave Buster, Hypno Shroom, Scaredy Shroom, Doom Shroom.
Unlocks: Lily Pad (plant) + Daytime Backyard (new house area).
Final Layout

Video Walkthrough
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Where the Play link?
@2fast4U(ToofastforU)
Thanks 2fast4u. I realized that :D
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You skipped the second level