All of the weapons sound very realistic and each weapon has its own unique sound. This is a lot of sound as there are a lot of weapons in the game. The cheesy approach would have been to use the same sounds for certain guns, but thankfully the developers did not take this approach. Ambient sounds are very good complete with wind howling in the arctic missions. Music does not interfere with the game sounds and sounds very good.
Voices are very clear and distinct and add a lot to the game.
The only sound in the game that could use some improvement is the explosion of your grenades, but it is not horrible in itself. Overall,the situations that the game puts you in are about the only decent aspects of the entire game,save the nice feature of being able to pick which team member you will play as primary. The game play just wasn't that great. That could have been done alot better,I think. They should have rendered this game the same as the first one.