Jedi Fallen Order - Alpha Nydak no damage (JGM)

How to defeat the Alpha Nydak on Dathomir without taking damage in Jedi Grand Master difficulty. The best way to take him out is to parry his first attack and then block his second where he sweeps with either his right or left arm and falls to the ground. Then you force slow and hit him two or three times. Rinse and repeat.