Last Stand

Last Stand is a inini-game. You start with 5,000 sun. It is in the pool. Try to survive 5 flags, with a break each flag to pick new plants. You CANNOT pick sun-producers. You get an achievement called "Sol Invictus" when you beat Last Stand with 2,000 sun or more.

Trivia

 * Overall, you will get 6,000 sun (since after each of the first 4 flags, you get 250 sun each time)