I'm a bit disappointed. People were saying they had issues beating Vrook and now Traya. On my first shot through ( A jedi Guardian/weapon Master - dual wielding a norm Lsaber and a short one) I just hit enlightenment and finished it in one shot ( well, one and a quarter, since my second round only hit 2 numbers before cut scene.)
For Vrook, on my second time through (Female sith consular lvl 14 when fighting him) I just hit my echani shield and Flightning'd him and didn't take a scratch. Both times were on Norm difficulty.
Advice: When fighting in this game you don't need Force Immunity at all, waste of a power slot. For all the Light Saber wielding fools, just equip a higher end energy shield and move around a little bit. The enemies, even the so called "sith lords" they just charge like regular lackies.
So, with Traya, if you're having trouble, just equip your shield and move around, if she hits you with any force powers I'd be truly suprised.