Great Dif. Of the garden: Complete Adventure Mode.
Pataboom !!!: Blast a zombie using an explosive tuber.
Zombinator: Wipe out 10 large zombies with a single explosive cherry.
Morticolore: Collect all 49 plants including those for sale in Mad Dave's shop.
No Seeds in the Pool: Complete a daytime level of the pool without using any type of peashooter.
Rolling Heads: Wipe out 5 zombies with a single walnut wall.
Planted: Get through a normal roof level without using any type of catapult plants.
Zombologist: Find the snow zombie.
Great Spilorcio: Collect 30 coins in a row in a single level without making a single one disappear.
Sunny days: Accumulate 8000 suns in a single level.
Pop-Corn Party: Defeat two ogres zombies in a single level using the cob shooters.
Good morning: Complete a day level by planting only mushrooms and coffee beans.
No Mushrooms Between Us: Complete a night level without planting any mushrooms.
Sliced Rocket and Zombie: Defeat the last zombie in a level using a lawn mower.
20 Below Zero: Immobilize 20 large zombies with a single brinporcino.
Hippies: Keep 10 twin sunflowers alive in a single level.
Pyromaniac: Complete a level using only explosive plants to kill zombies.
The Lawnmower: Kill 10 zombies with a single lawnmower.
Below zero: Destroy 3 sleds with a Jalapeeo!
Cob Code 5: Create 5 cob shooters in a single level.
Monsters in Dust: Crush 5 zombies with a single zombie crush.
Blind Trust: Complete a level full of thick fog without using seedlings or trefoilers.
The pool is closed: Complete one of the pool levels without using any aquatic plants.
Terraced Watermelons: Plant one winter watermelon in each row.
Second Life: Complete Adventure Mode 2 times.