So I was catching up on my zombies and I heard the developer from Treyarch say something. Watch the video.
Listen to 3:00-3:20. Jimmy says shoot a lot of different guns and you will find something unexpected happen.
Okay now from 3:22-3:30 he says there is more than one way. Is it possible to kill him without using the VR11? Just plain guns? I have yet to see anyone do so. I think the secret is his hammer.
Note: Isn't the gameplay the same gameplay that was leaked several days earlier?