I have been watching a lot of zombie movies lately and a lot of the characters screw up in these areas...

1. They scream...too much
2. One complete wanker lets the zombies in to save himself...this plan usually goes tits up
3. They can never kill an infected person
4. there is one person (usually a woman) who panics and lets the zombies in
5. There is a complete tosser who doesn't give a flying fuck about anyone except himself
6. They hardly ever choose the right weapons
7. They hide in shopping malls...well isn't that just wizard
8. They are to trusting with the police
9. They always choose the shotgun...to much reloading
10. They argue too much

They should...

1. Organize before they rise!
2. They feel no fear, why should you?
3. Use your head: cut off theirs.
4. Blades don’t need reloading.
5. Ideal protection: tight clothes, short hair.
6. Get up the staircase, then destroy it.
7. Get out of the car, get onto the bike.
8. Keep moving, keep low, keep quiet, keep alert!
9. No place is safe, only safer.
10. The zombie may be gone, but the threat lives on.