How to beat george romero on call of the dead?

I have heard many times that you have to get the vr-11, upgrade it, bring him to the pond where he slows down, have the weapon upgraded and shoot him and then he will fall in the water and disappear. I have also heard you can use him against other zombies by shooting him with the gun that turns zombies into humans but i have not tried these so they are not yet facts untill tou try it yourself