Nioh

There are a lot of bosses in this mission. Onryoki, Nue, a vampire and a spider are among those with whom we have already dealt. The tactics are still the same (even easier if you use a living weapon on the spider, which helps to take it out within one bar of its action).
Subsequent bosses are more difficult. Oda Nobunaga is not completely killed. You need to take off 3/4 of his life and the battle is over. He is essentially a human opponent and spamming Bull Guardian Spirit against him is quite effective. The bull knocks Oda down, you finish him off. So 5-6 times maximum - and Oda is ready. Well, don’t forget to slow down.
Next is Edward Kelly. Quite a simple boss. Slow him down and hit him. As soon as you hit his block, jump away, he will teleport with the blow.
But against the next boss you need to choose tactics. I found the following:
First, we wait for an attack from the head (preferably in a block) and then we run up and kill the first head.
In a battle with two heads, you can simply provoke them into striking by running along the edge of the roof. Don't kill one right away, leaving health for a couple of hits. After that, focus on the second head. After killing her, immediately cut down the second one. The roof becomes open and hitting heads becomes a little more difficult. The main thing is not to stand in one place. We provoke the heads to strike (we run next to them) and then run up and hit them several times at a time. And immediately run, because... Now a bunch of projectiles will fly there. The exception is if the head is lying down. Here it is better to take out the entire strip at once, because the damage goes through better. Someone may give advice to shoot heads with a musket, but it’s better not to waste bullets until the last head. It completely restores the boss's health bar and starts hitting with all available attacks. There is no need to come here anymore. Shoot the head into the skull, one bullet between attacks. do not stand still after the shot - the head attack can be lightning.
Oh yes, I advise you to use regeneration and sake amulets against elemental damage.

Some complex tactics you have. Just kill the first head. When two heads appear, you can focus on just one. When you kill her, the snakes break the roof and two snakes. To the left and to the right of you, they “gobble up” amrita and fall unconscious. at this moment you will have time to easily kill one of them. I advise you to choose the left one. Afterwards they completely destroy the roof and amrita crystals appear. You can kill snakes simply by waiting for their attack, and after approaching them, beat them, or you can force them to bite near the amrita stone, they destroy the stone and the amrita of the stone enters them and they fall unconscious for about 10 seconds, during which time it is easy to drain it. As soon as you finish off one of the last two heads, the remaining one is transformed and receives the properties of all heads combined. run towards her point-blank, wait for the attack and when she approaches, in principle, you can kill her in 1 run.