Full list of all 18 Plants vs. Zombies achievements worth 200 gamerscore. It takes around 20-25 hours to unlock all of the achievements on Windows Phone.
Achievements they've won
Achievements they've not won
Bowl over 5 zombies with a single Wall-Nut.
Hypnotize the lead dancer zombie.
Blast 10 zombies at once with a Cherry Bomb!
Plant your first 10 peashooters.
Complete Adventure mode.
Collect all 49 plants (including plants from Crazy Dave's shop).
Defeat your first Gargantuar.
Win any level after all lawnmowers have been used.
Go trunk diving and spend at least $25,000 on Crazy Dave's Twiddydinkies.
Stop the horde using only the Sunflower, Wall-Nut, and Chomper on any level.
Complete a nighttime level without planting any Mushrooms.
Complete a daytime pool level without using peashooters of any kind.
Defeat a normal roof level without using any catapult plants.
Complete a daytime level by planting only Mushrooms and Coffee Beans.
Defeat 2 Gargantuars with Corn Cob missiles in a single level.
Get to a streak of 10 in I, Zombie Endless.
Get to a streak of 15 in Vasebreaker Endless.
Beat all 19 mini-games.