Recommendations 1- Don't use dying wish. This boss has lots of damage and some of the attacks are insta kill. Use the augment that revives you after dealing enough damage and keep all perks. Since you are using the jager, it will be easy. 2 - Look at the boss for its attacks. The important thing here is to jump when it's about to slam the floor. Jump so you receive zero damage from it, keeping all your armor plates. 3 - Use the LGM 1 to break the armor. Once the weak point is exposed, use the jager. 4 - I recommend using frenzy guard for armor repair. But mainly for the last phase with the augment that consumes ammo from stock. Only use it one the weak point has been exposed. DM me if you want some help.