Plants vs Zombies: Extreme Difficulty

Plants vs Zombies: Extreme Difficulty is like Plants vs Zombies, but MUCH harder...

 Level 1 

Flags: Two

Plants: Peashooter (before level), Sunflower

Zombies: Normal, Conehead

 Level 2 

Flags: Three

Plants: Wall-Nut

Zombies: Normal, Conehead, Buckethead

 Level 3 

Zombies: Mummy, Cone Mummy, Pogo

 Level 4 

Zombies: Mummy, Cone Mummy, Buckethead, Big Wave Garg, Big Wave Imp

Level 5

Zombies: Big Wave Imp, Swashbuckler, Fishing