This Seeking Tech guide will show you how to get the Wax On, Wax Off trophy and achievement in Metal Gear Solid Delta: Snake Eater.
This will unlock when you “parry all of The Boss’s CQC attacks.”
To do so, follow the video and text guides below:
For the first part of the fight, The Boss will try to CQC you. At some point in the animation, time will slow down. If you press R2 (New Style controls) or Circle (Legacy controls), during the slowdown, then you should be able to parry her attack.
You only need to parry her once per CQC attempt when she has more than 50% health. When you get her health down to below half, you have to parry her twice during her CQC.
Once you parry her single and double CQC attempts, you should unlock this trophy and achievement.