I am at the point that I can fight literally forever and I have killed probably 30 walking armor trying to get raze, but he regenerates in the chambers every time. I have flipped the lever on each one, and watched the cut scene, and he still jumps in one and regens EVERY TIME!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!