This is my Solo/Roam/ST/group spec
3fs-3crit rest up to you, i have in STR atm I will get 4crit -3fs later on.
RoR.builders - White Lion
I use trained to threaten because armor debuff's (in hunter's tree) level is bugged, it doesn't get better as you put points in hunter tree once its fixed I might consider it.
in TTT the pet armor debuff is very close to the standard (1000 that you get in hunter's tree) because of 9 points you get (866 I think), so I rather have that, + pet also does an interrupt that adds 30% extra damage from pet, works nicely with Leonine Frenzy, also you get a slow dot that deals a nice amount of damage.
Over all in full invaders you can try hunter's tree, but since armor debuff level is bugged in hunter's tree ( power doesn't increase ) I'm not sure. Once I get full invaders I'll give it a try.
RoR.builders - White Lion
Full invaders build, here you will need 4crit must, unless you don't go auto attack tactic, and use TTT then u can skip 4 crit.
if u do go 4 crit, with auto attack tactic
Then your job is simple, KD + leonine frenzy,(sometimes you can save KD for smart plays, for example vs squigs you can wait for selfpunt then KD) armor debuff, auto swings from axe, and wait for the right moment to use coordinated strike (ur burst). full invaders will give you extra 25% damage from auto attack, + 10% extra crit for hunter's skills, and auto attack speed. with tactic and increasers you will be a fast swinger.
and aoe build + sov+2 builds someone posted here, only thing in the aoe build you might switch tearing blade for brute force if needed, good luck.