User blog:Snowttail/Very Hard Challenges

Get Peking Express in under 5 seconds

Get over 1000 flags in all endless modes

Kill over 3,000,000,000 zombies

Get over £200,000,000 coins before level 3-5

Complete all Minigames without a bite from a zombie.

Build 30 Cob Cannons in a single Non-endless level

Complete all Survival games only using plants obtained in Day levels

Get 5,000,000,000,000,000,000 coins

I have not completed any of these