For me the first Isshin-Phase (second overall, first after Genichiro) was the hardest. I'm just really bad at reading him here. His second Phase is more doable because the Lance is much easier to counter. If you can make it to the third phase, you MUST counter the thunder attacks (e...
I think Genichiro is there just to put you on tilt, he would get a hit in and I would just start seeing red, I never even got to Isshin's third phase in that time. Isshin's phase one is a bit tricky at first, but if you keep up the pressure his moveset is prett...