Collect all 49 plants in the game
Win any level after all 5 lawnmowers have been used
Blast 10 zombies at once with a Cherry Bomb!
Go trunk diving and spend at least $25,000 on Crazy Dave's Twiddydinkies
Stop the horde using only the Sunflower, Wallnut, and Chomper on any level
Complete adventure mode
Defeat your first Gargantuar
Plant your first 10 peashooters
Grow the Tree of Wisdom to at least 100 feet
Bowl a winner with a friend in Co-Op Wall-Nut Bowling
Survive 40 waves of pure zombie ferocity
Go on a 5 game winning streak in VS. mode