User blog comment:Big plants fan/My new achievements./@comment-5565348-20121022023617

All your challenge r belong to us(Medium-Hard): Complete All your brainz r belong to us without using Ladder Zombies, Bungee Zombies or Digger Zombies.

Alternate Digging Stop(Hard): Complete a level that has Digger Zombies without using backward shooting plants( Split Pea, Starfruit, Gloom-shroom, Cattail and anything else I might have forgotten. Explosive Instants and Squash are still allowed).

Pool Party Madness(Very Hard): Survive 50 waves of Last Stand: Endless.