Maximize Hunter Skills and Attack Long Range with High Crit Chance. Solo and Team benefits.
Mobbing and Bossing. Good survivability with Health Increase, Health Regeneration for FL4K and Pet, Damage Reduction and Health Regeneration from Flakk Attack. Long Range attacks preferred from Jakobs guns so that when you crit (anywhere on target 20% of the time) you get ricochet benefits.
I think many builds invest points in Cooldown Reduction but with Flakk Attack it isn't really necessary, especially when you take Rakkcelerate which not only gives an extra charge, but reduces the cooldown a whopping 20%. I have rarely found myself needing to use my action skill and found it unavailable. Other skills that either add a bullet to the magazine or increase fire rate on crit are overcome by reducing reload time and having that Hunter Skill improved by Big Game. Ammo is cheap and plentiful, just reload when you run out in the current magazine naturally.
Shooting with a Sniper Rifle that has a high fire rate can also be fun. Handling is never an issue with both Ambush Predator and The Most Dangerous Game.