I beat the knight after 10 tries, having not played since before the patch, which was better than I expected.
I can't tell how much it was me having a clear head from a recent nap, cleaned up inventory and about 25 pre-patch losses of experience, and how much it was not basically always getting hit at least a few times on the tunnel attacks.
Is there a pre-patch fight sim somewhere I could check if I can get some clean tunnels done or would I need to download the pre-patch version?
Back into chapter 4, is Gerson overall harder or easier than Knight? I didn't fight him last playthrough either.