Ping pong
Defeat Subject Alpha v1 by parrying only.
Chapter 5 Boss
MissableThe achievement is missable you cant fight the Boss again only in a new game.
For the Achievement to unlock you can only hurt him with parry his attacks...no shuriken or sword only parry.
Easy to get once you know his pattern.
In order to parry attacks which you get through natural progression in story you have to press in the direction of the enemies attack (bullets) and press x before it hits you...after some practise you will get it.