I've done all of them. Can you do them?

Actually, they are not very hard.

1. Complete It's Raining Seeds without remove any fog. (Difficulty: 7/10)

2. Complete Bobsled Bonanza without melt any ice trails. (Difficulty: 6/10)

3. Complete Last Stand without use any instant kills. (Difficulty: 8/10)

4. Use a normal Wall-nut to kill a Dancing Zombie before he summons Backup Dancers in Wall-nut Bowling 2. (Difficulty: 7.5/10, Lucky-based)

5. Complete Air Raid (hidden mini-game) without lose any Lawn Mowers and Pool Cleaners. (Difficulty: 8.5/10, Lucky-based)

6. Complete Dead Zeppelin without use any Bungee Zombies. (Difficulty: 7/10, Lucky-based)

7. Complete Me Smash! without use any Gargantuars. (Difficulty: 7.5/10)

8. Don't use instant kills to kill a Giga-gargantuar. (Difficulty: 9/10)

9. Collect all Zen Garden plants. (except Marigold) (Difficulty: 9/10)

10. Don't use instant kills, Gloom-shroom, ButterUmbrella Leaf or Ice-shroom to kill a Bungee Zombie. (Difficulty: 9/10)