One word of caution, if you don't like blood and gore, well, look elsewhere. The death animations are pretty amazing sometimes. Lots of guts and gore. I thought they were nicely done, but if you want an antiseptic RPG, this isn't it. The sounds are also well done in combat.
Guns are guns, lasers are lasers, death screams are death screams.
There isn't much voice acting in the game, only a few key NPCs get the treatment, but where it exists it is quite well done. Most interaction is text based. The higher your intelligence the more options you have of interacting with NPCs. The problem is there is not enough different music, so you can have the same thing looping over and over in many locales. This is the only part of the game where it felt like Interplay had scrimped and cut corners.