Backstab for skill 1st one, 2nd powerstrike, 3rd retrebution, u might solo a bit during climbs so those will help.
If u have no gear i would recommend going Staffs, stating 1st 10 into Vita rest into dexterity, play rogue till u pass to samuray.
Then start another Rogue, by the time you get 16 samuray, u will get either Fg to buy Daggers/Swords or found a couple

GL