you can't kill them, but you can kill them with the wizard power on by just running into them.
the first one is easy just knock out the first zombie then go up the la-tar and there's the diamond
in the dock
Get 5 Diamonds
The hardest zombie to kill is of course the Boss in the zombie game
you get 5 diamonds
you'll need a sword
you use wizards powers
You will never get it! Ha Ha Ha!
Use Key Z
kill 2 zombies for zombie repeller and kill 2 humans for delicious brains on a zombie playlist in match-making
i don't know but it think its in hidden places