Wow...I'm kind of torn on this one...
Let's start with the good. The environment was very well picked, and you and your friends made very good use of the environment. You guys also did a good job acting--I especially like the death movements performed by the guys when they die. The graphics were great, with very little pixelation. And I love how you converted the video clips into a game. This is like one of those FMV games on the Sega CD, only nowhere near as bad or embarrassing.
As for the bad: well, the game is just too simple. I could predict where all of the bad guys where going to jump out of. There are also some gameplay issues--the enemies take too many hits to die, so you're guaranteed to take a certain amount of damage while shooting the guy five times. In the future, you might want to make it so that headshots do more damage and make it take less hits in general to kill. Lastly, the music was kind of bland--it's the title music from Call of Duty 4: Modern Warfare. Not a bad choice, but you might want something a bit more action-packed.
In conclusion, I liked this game. I liked the premise, the acting, and the live-action video. The gameplay, however, I found to be stale. If you made another one of these, only longer, more surprising, and with better music, I would easily have given it an 8 or a 9. I hope this review was helpful.