But note that this is different from when you are thirsty for blood. Regardless of NPC, NPC was abandoned by the boss almost immediately. So when NPC is still alive, do your best to be willful. It can generally last until the second stage. It also attracted the boss's firepower. Let NPC live for a while and make sure he doesn't die. Basically, go around the back, cut 2 knives, jump back and cut 2 knives. If the BOSS jumps, roll to the position where the BOSS jumps, but don't roll immediately, wait for 1 sec, or you won't be able to hide.
The second stage is still awkward, revolving around the boss. If the distance is far away, the boss will hold a firm hand. If you are close, BOSS will use the sword to insert and raise the sword to gather gas to cut these two moves. However, the boss of these two moves can't move for 2 or 3 seconds. Cut it twice and retreat quickly. The downward chop can continue to bypass the back.
As long as you follow the rhythm, pay attention to the boss will definitely fight back, master the rhythm, and it is not difficult to roll behind the boss to hide your personal moves.
The above is my own summary, and it is still in the state of land reclamation. A more detailed strategy will probably be found after a while.