Important keys

Q button = Refresh weapon
R button = Lock on target

V button = (press) Evade / (hold) Sprint
K button = Jump

I button = Light attack
O button = Strong attack
L button = Sub weapon attack

X button = Camera Reset

Arrow keypad Up/Down = Change character
Arrow keypad Left/Right = Change vamp skill / ecstasy combo (the blue small bar with skill icons)

Numpad 2 = Lock on target change

Keyboard vs Loading Screen explanation

Q button = LB
R button = RB

K button = A
I button = X

O button = Y
L button = B

Numpad 2 = Right stick
X button = Left stick

Q + R buttons - (LB + RB) to perform Cross Merge combination



O + L buttons - (Y + B) to perform Ectasy Combo / Vamp Skill



2 + X buttons - (Right stick + Left stick) Transform to Berserk mode



I + K buttons - (X + A) Blood Recovery (Kagura and Saaya only) which uses the red bar for transformation to regenerate HP

QTE

• If only 1 arrow, just press W A S D based on the direction
  
• If it is diagonal arrow, press W A S D (2 buttons) accordingly
  
• If it is a CIRCLE, press Numpad 2
  
• If it is 2 arrows pointing LEFT & RIGHT, press A and Numpad 6

Credits to the players in Onechanbara Z2: Chaos discussion thread


You will face difficult QTE from this boss onwards, scroll to view

P.S.
It's my first created guide, if there is anything miss out or I have to give credit to anyone, please comment for me to improve & update this!

Thank you for reading ~