The Sekiro Isshin the Sword Saint boss fight is the final of all the endings outside of the Shura one. Having just watched him climb out of Genichiro’s neck you should have a rough idea of just how obscenely hard this fight is going to be, even compared to the other boss fights in Sekiro. He has three phases and if you die you have to go back and fight Geninchiro, Way of Tomoe again. It is annoying, but there is a great cheese strategy for his last two phases which we've detailed in this Sekiro Isshin, the Sword Saint boss guide.
How to beat the Sekiro Isshin, the Sword Saint boss
So, the first phase is a straight sword fight with the Sword Saint and he has some incredibly powerful attacks up his sleeves. There are plenty of attacks to watch for. The first of these is if he sheaths his sword, he follows this with a very fast dash and two strikes, you can either run away when he puts his sword away or attempt to deflect. Either way, he is vulnerable to a couple of hits immediately after this.
He will occasionally do a very fast thrust, you can Mikiri counter it for good posture damage and a chance to get two attacks in. His main combo is a three to four-hit sword combo, this has incredibly strange timing and is tough to learn if you want to deflect properly. He uses the Ichimonji Double in this phase, you can punish this by dodging around him to get in some strikes. The other attacks to watch for are his wind sweep and wind slash attacks, these are both indicated by wind gathering around him, run away to avoid them. Eventually, you will defeat his first phase.
His second and third phase are both similar to each other. In these phases, he uses a huge spear and also has access to a gun. If you want to fight him fairly you can. However, you can cheese him in these phases by running around in huge circles and waiting until he uses his leaping spear attack. If you run underneath him as he does this you can stab him once before running away. You can just repeat this until the fight ends. He doesn’t fight fair so neither should you.
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