I have been playing SS2 (360 Pal version)for the past few days and have to report it is terrible in almost every way.
The graphics are very original xbox, so while not being terrible they fall way bellow most 360 and Cod games. The soundtrack again is just serviceable at best, with the score soaring and dipping throughout the game.
The real problem is the gameplay, since the first SS (which I thought was great)we have switched from 3rd to 1st person and with it have the loathed Quick Time Events, these really have no place in games and certainly not in 1st person ones, where you/your character is already immersed enough into the gameworld. You move very slowly, you can run via lb. The weapons switch is so slow as to frustrate and you get snagged on the game engine a fair bit.
The game is split over 10 levels, each taking anyway from 20-40 mins to get through and is a fairly straight forward corridor shooter albeit set in Nam and with a horror edge, I will give praise for some tense moments, especially during a mission in a mansion, but these are few and far between.
The game does seem to throw some easy achievements at you (always good!) although I will not be getting the "played twice" or "complete the game on the hardest setting", I did so on normal, I got 150 points for that.
To summerise, a really poor effort and great shame as the 1st game to use this name/brand was really rather good.