Wall-Not Attack

Difficulty: Hard-Very Hard

Strategy Tips
Garlic is a necessity on most strategies, due to its lane diversion that makes Peashooter Zombies shoot into empty rows. However, it should be used with caution, as while the peas from Peashooter Zombies hit plants for the 1/3 of a bite, they hit Garlic with the power of a normal bite. Also, many strategies use Potato Mine, Puff-shroom, Sun-shroom, Spikeweed and Spikerock because they cannot be hit by Peas fired by Peashooter Zombies. Plants that attack other lanes are also reccomended, but not needed. You could use Garlic to fend zombies away from a while lane of Sunflowers, and use Spikeweeds since they can't get hit. Instant Kills will help you earlier in the level.

Strategy
This Achievement is a little hard to beat, since defensive plants are usually a must in this Mini-game, as Peashooter Zombies can attack from afar. But with the right strategy, this achievement will become easy to earn. It might be easier to earn this achievement if you choose plants to block other plants that are doing a lot of damage to the Zombotanies. Choose the following plants:
 * Sunflower
 * Twin Sunflower (Optional)
 * Potato Mine
 * Imitater Potato Mine
 * Squash (Optional)
 * Spikeweed
 * Spikerock
 * Coffee Bean
 * Fume-shroom
 * Gloom-shroom
 * Garlic

Buy the Rake as well.

First, plant Sunflowers in in the first, third and fifth lanes, but if there is a rake on it, don't plant anything in that row yet. Then, when the second zombie comes, use the Garlic to divert it, then, use the Potato Mine. Repeat this and lay down double Garlics in the first, third and fifth lanes until multiple zombies come, then start laying down Spikeweeds and Spikerocks. Then once you can afford it, plant Gloom-shrooms on lane three behind the Garlics. Once you have a row of spike plants on lanes 2 and 4, plant three Gloom-shrooms on lane 3 behind Garlics, you should do fine. Remember though, regularly replace Garlics if they are nearly fully eaten.

Alternatively, you can use the Squash in addition to the Potato Mine and Imitater Potato Mine to earn a decent amount of Sun first. Spikeweed and Spikerock should be sufficient to fight off the zombies, if you do not have the Gloom-shroom. If you find you have Sun to spare, you may also plant Twin Sunflowers to get more Sun, possibly also earning you the Sunny Days Achievement.

Another strategy
Select the following plants:


 * Sunflower


 * Garlic


 * Potato Mine

And any other shooting plants.

First, plant Sunflowers on the first and fifth lanes, and put Garlic in front. Use the Potato Mines to kill the zombies. Then put the Garlic in front of the other lanes, as they can withstand a fair amount of damage. Then put your shooting plants behind the Garlic. Remember to replace the Garlic.

Another strategy to get the achievement Pyromaniac at the same time
Bring the following plants:


 * Sunflower


 * Potato Mine


 * Imitater Potato Mine


 * Cherry Bomb


 * Jalapeno


 * Doom-shroom


 * Ice-shroom


 * Coffee Bean


 * Garlic

Start by planting as many Sunflowers as you can in the 1st, 3rd, and 5th lanes. Plant 2 Garlics at the front of these to divert all the zombies into 2 lanes. Remember to replace your Garlic often, as they only need 16 peas to be killed. A single Garlic can be killed by only 5 to 6 zombies. Plant Potato Mines ahead of zombies, as peas will pass over them. Use Cherry Bombs for small groups of zombies, Jalapenos for lanes full of zombies and Doom-shrooms for large waves of zombies. Plant Sunflowers, Potato Mines and other cheap plants to hold off zombies long enough for a plant to recharge if you need to. Also use Ice-shrooms to hold off a lot of zombies at once. Just be careful not to use any Lawn Mowers or Garden Rakes, or you will not get Pyromaniac at the same time.

Another Strategy
Pick the following:

Any other plants you will think will be useful. but never put Sun-shrooms. As you get more sun than it gives, and it requires a Coffee Bean, hence making it even more expensive. Some plants are small enough to dodge the Peashooting zombie's attacks. For example, Puff-shrooms can easily take down Peashooting zombies. But the Wall-nut Zombies will need more. You can use a Doom-shroom or a Hypno-shroom. Using this strategy you may also get the Good Morning achievement. Don't be afraid to use Lawn Mowers at anytime, unless it is the beginning of the level.
 * Puff-shroom
 * Doom-shroom
 * Hypno-shroom
 * Coffee Bean

Another Strategy would be:

 * Coffee Bean


 * Puff-shroom


 * Sun-shroom

And your choice of any mushroom

First plant Puff-shrooms on all the lanes and ONLY collect sun from the sky. You shouldn't plant any Sun-shrooms and wake them up. You can survive on just the sun from the sky. When the first Zombie comes, you should have 75 or more sun by this point, plant a Coffee Bean on the Puff-shroom in that lane. Plant 5 more Puff-shrooms in the lane directly in front but you shouldn't wake them up. They will serve as a time consumer for the Zombies. Plant another 5 Puff-shrooms behind the awake shrooms and wake those up to. Once that is done, plant 2-3 rows of Sun-shrooms. Now you can wake them up. Even when they grow to full size, the peas will not hit them. Replace any gaps in the time consumer row of shrooms and wake them up (optional). Even in the waves this strategy will work. Just replace any Puff-shrooms and you will get the achievement, and possibly Good Morning.

Strategy 5
Select these plants:
 * Sunflower
 * Twin Sunflower (Optional)
 * Threepeater
 * Garlic
 * Potato Mine
 * Spikeweed
 * Spikerock (Optional)
 * And other instants of your choice.

First, start of by collecting sun from the sky, and place Garlic in the far right column, in rows 2 and 4. After that, place Potato Mines in the far left column, in rows 1, 3 and 5. Because of Potato Mines long recharge, it's recommended to wait and find out which row the zombies come in and place the potato mines there.

After that, begin placing Sunflowers in the two far left columns in rows 2 and 4. Keep using potato mines and other instants to take out zombies until your have enough sun to place a Threepeater. Put the Threepeater in front of the sunflowers, in rows 2 and 4. These should now defeat Peashooter Zombies.

(Optional) Save up and turn all the Sunflowers into Twin Sunflowers.

Now, place Spikeweed in rows 1, 3 and 5. Remember to replace Garlics when they are eaten, they are vital to win. Also, replace potato mines when they get blown up.

On the final wave, zombies build up in rows, so use instants to finish them all off. Congratulations, you earned Wall-Not Attack!

Easy and simple.

Needs

potato mine

Garlic

Sunflower

Spike weed

Any instants you want.

Plant two sunflowers in the same lane. When the first zombie comes, use a potato mine in him. Keep delaying the zombies with mines until you have six or five sunflowers in the same lane. Plant a garlic in front of the sunflowers as well as in the rows even to it. Eg. If you planted in row 2 then the other garlic in lane 4. If you put the sunflowers in lane 3 then put the garlics in lane 3 and 5. The plant 3 spike weed in the rows that don't have garlic. Use mines and other instants for the wall nut zombies and replenish the garlic when it cries.

Trivia

 * The achievement's name is a reference to the Wall-nut.
 * However, it could be saying no walls attack, as sometimes defensive plants are referred to as walls.
 * This is one of the two Achievements that involves not using Tall-nuts, the other one being Sproing! Sproing!.
 * The achievement icon has a Tall-nut inside a Pumpkin, a common defensive strategy.