who's the hardest enemy that you've encountered in any of the AC series?

[Tadakatsu1Honda]

in LR Evangel is my archrival,I had an easier time beating up zinida (weird right) its just that darned linear,he's to good with it.Everyone else I can beat up and down the battlefield.Well it doent apply when im against multiple AC targets,like that one mission where you must kill zuben then rim fire,thats always been hard for me.