The last time I played the first Force Unleashed game was some years ago, and I vividly remember it as being the Jedi/Sith power trip that Star Wars games were missing until then. It had fun and easy to use force mechanics, the best I'd seen, with a passable story and decent brawler gameplay to boot. Outside of a few frustrating segments and glitches, it was an amazing experience, which held my attention for a good 20+ hours.
With that in mind, I was excited for the sequel. Unfortunately, The Force Unleashed II pales in comparison to its predecessor. Its 4-6 hour length is probably its greatest weakness, and this game certainly has weaknesses. Perhaps by itself it's not that bad of a game, although I can't help but compare it to the first game, an adventure which saw you flying around the galaxy, from jungles to lava planets to imperial ships, fighting various rancors, robots, Jedi and Sith. It was amazing! This game, however, barely innovates at all on what the previous title had to offer; the combat system remains largely unchanged, the story this time around is decidedly boring, and the enemy and location variety seem to be worse than before. Strangely enough, even the menu graphics stand out as outdated and clunky.
Bottom line, play the first Force Unleashed instead. The only thing this game does better is graphics.