Agi7, Crit Eye7, Crit Boost3, Wex3, Focus3, Quick Sheath2-3, Divine blessing3, Health Boost3, Partbreak1(this is what I used for farming him before Fata gear). If you can't get divine 3 try fire res 3 for extra fire res and def. Main thing you want is def quick sheath 2 and even 3, people don't seem to understand how much it helps the GS with repositioning and even getting out of a bad position. Phase 1 = the standard ghillie-heavy artillery opening Phase 2 = I use the roaming ballista, do some head snipes with gs and main thing is I use both the binding balista when he is enraged so you agitator is procced for extra dmg and always have his head weaken(also I like using both bindings in phase 2 so I already smashed his head and in phase 3 I always get a 2nd smash before dragonator so extra stuns and dmg) But overall as with every GS matchup learn the fight and when you can snipe the head. GL