^ A small suggestion before I head off to dinner. I run my retribution character as an assassin (better caps in strength and skill), and I use Vengeance over Gamble. I find that my crit chance is high enough anyway, and vengeance has a really high activation rate. When one is below half health (should be at 40, assuming you maxed HP), vengeance has a minimum of 20 added damage. Also, I'm assuming you're using a forged weapon due to the neat name. Just make sure that's a Brave Sword.
Righty, then. That's my two cents. Off to eat chicken.