The professor on the zombie map 5? well he will always run faster then you so you can not 'get ahead of him' but if you use the 'winters howl' or 'winters fury' it will slow him down. The higher the round, the more the shots it will take to slow down the professor.
I hope this helped!
You have to finish the anvil request on office zombie
Throw a granade on top of it
Use the piranha and hit the zombie when he is facing you.
Throw the buzzsaw until the zombie catches it.
You use the pumpkin try to hit the zombie's head in the back.
You hit the zombie in the back of the head so hard that his eyeball falls out
Take the blade and u have to throw it so it hits the zombies arm
fire eaters
You get the saw blade and you keep throwing it at the zombie until it slices his hand off
All or which?
Throw a grenade in is face
bu doing a paja