If you guys still happen to be stuck at that part with the burning building and the never ending guys that keep jumping in, you need to go up to the windows and shoot the guys that are further back in the background. They are on top of the roofs and stuff. Otherwise the guys will continue to come to the windows. Hope this helps, because I was stuck too.
I just got through this last night. Man I hated the stupid cut scene. I must have watched that 20 times.
Hide behind the table on the floor, and take out the guys at the windows. Throw grenades, cocktails, and pipe bombs through the windows and take out any guys in the background.
Step up to the window at a lull and shoot the dudes on top of the building across to the left.
When the game tells you to leave and meet the guy and girl at the shrine, the fire behind you will go out and guys will start coming through the door... MOVE! You will need to kill whoever is in front of you and get out of there.
New game... new sig... now I just need to think of something...