You fight as a Sith in most of this game, and the Sith know no mercy and remove anyone who gets in their way. Consequently you will wind up killing mostly everybody you meet, enemy and friendly alike, to achieve your goal. It is also worth noting that the three force-using female aliens you fight are scantily clad (and you may also enter cheat codes to play as those characters). The only swearing you will hear is "hell".
In a word: redundant. It's basically "Okay now kill this guy, and now this guy. Zap these four guys, slice this one, choke that one, etc." Combat does include a certain level of strategy though, which makes the game fun. The game itself is very short though, taking only about 10 hours (for me anyway) to finish it. But that exludes the cutscenes. And there are a lot of them, two of the missions being wholly cutscenes. On the plus side, it has a good story without the overly dramatic dialogue. The graphics are...bearable, but not horrible, for it's time anyway. Consider these before buying the game. It's most likely not one that you will find yourself playing often.