Can we talk about the video games in here?

[Knight of Gondor]

I know, I know, but I keep telling you. Physical attack won't push him over the edge until he staggers, and then flails his arms as if losing his balance. This is the ONLY time when he is vulnerable to knock off the cliff's edge. I've tried it every other way, with all manner of combos and attacks. He is impervious to any of them. ONLY when he loses his balance can you smack him. Then you stab him, and he falls off. Only then does he lose health. THe thing is, he won't lose his balance when we play co-op! Does no one understand my plea? My plight?