I'm actually surprised to say that I've seen this movie...and to be honest that was my favorite scene of the movie (I was quite indifferent to the movie as a whole). It was a great way to pay homage to the game and in my opinion was done very well
I watched the movie for one reason, to see that scene, to bad they couldn't do more of the movie that way, but it would of taken too long. (it took fourteen days for the five minutes they had.)
I thought it turned out to be a pretty good film, though it didn't quite fallow the games story line as films about games often don't. The FPS scene, I agree with pangtongshu, that scene alone was enough to make up for it and pay respect to the game.