Trek to Yomi

This is not missable if you complete the game on Kensei difficulty as you are 1 shot anyway. Plus-side is you do insane amount of damage compared to ronin difficulty.

Chapter 7: Final Boss.

First phase i would recommend parrying him right from the start and then do a double heavy combo (Y,Y) rinse and repeat until he's dead. The timing is always the same.

Second phase is a bit more tricky, he will now have access to an exploding fireball and a "carpet" of fire. They are both fairly easy to see coming. Your dogde on (B) is very handy here to get out of the fireball before it explodes (you have 1-2 seconds). When the carpet of fire is summoned, it starts closest to him and rolls out towards you. Again your dogde is a life saver. Generally if you can roll behind him, you can get some good damage but becareful for his swings and be ready to parry (i exclusivly used heavy attacks here).

Third phase he will summon 2 phantoms, one that looks like first phase. This guy can almost be treated as the first phase though he is not as agressive so usually he will not attack right after you parried into (Y,Y). The other phantom i felt really tricky, i cheese'd him with (up+X,X,Y) and tried to keep a distance (if anyone has better tips or more feel free to drop them in the comments).

Forth phase is basically the same as second phase, but I have seen him teleport here so keep and eye out for that.


Happy hunting

This is the final boss in chapter 7. The fight is divided into four stages. Stage two and stages four are almost identical.

Two remarks beforehand: All enemy combinations will never consume your entire stamina. This is my experience with all the stamina updates I have collected. In the second and fourth phase (demon) you can roll through the opponent.

Stage 1
It begins simply. You can play safe and always wait for the attacks. Then parry them and hit back with a Stunning Combination ( + + + ). Then block all the attacks and wait until it is quiet again.

It is quicker if you attack with Heavy Stun ( / + ) + . Line up a few light attacks . If you are sure, you can repeat it once or twice. Otherwise, block all attacks and collect stamina again.

Stage 2
My experience has been to roll through the opponent and perform a spinning attack ( + ). Then roll again and do the same again. You should always be behind him if possible. The fireballs and the fire carpet are quite annoying. You should be careful when the boss has only half of his life points left. At that moment he will explode. This will damage you if you are too close.

Stage 3
You will fight a shadow image of the enemy and a minion. For the boss ghost, you can use the same strategy from stage 1. I couldn't parry the minion very well. The second fighting method (Heavy Stun) from stage 1 worked all the better against him.

Stage 4
This is basically like the second phase. Use the same strategy.

Here is 100% complete walkthrough guide for every achievement and collectibles in Trek To Yomi:
(Timestamps are in pinned YouTube comment)