hey, been playin through this lately though i appear to have got stuck. im in the chapter "follow Freeman" where you have to destroy the 3 power generators to lower the shields etc
i've taken out 2 of them (the one in the middle, and the one off to the left i think where the room with all the holes in the wall are and the guards that seal you int hen cut through the door) but i cant get to the third one. i remember runnin round there with guards after me, i shot all but 1 of them, then as i was reloading one of the guards ran into the room and closed the big metal door. I've been runnin round this place for like 20 mins now and i cant find another way in.....cant even ram my way in
and to make matters worse, the last autosave point is when im way back in the factory before i rescue barney from the snipers in the street
any ideas??
i've taken out 2 of them (the one in the middle, and the one off to the left i think where the room with all the holes in the wall are and the guards that seal you int hen cut through the door) but i cant get to the third one. i remember runnin round there with guards after me, i shot all but 1 of them, then as i was reloading one of the guards ran into the room and closed the big metal door. I've been runnin round this place for like 20 mins now and i cant find another way in.....cant even ram my way in

and to make matters worse, the last autosave point is when im way back in the factory before i rescue barney from the snipers in the street
any ideas??