*SPOILER* I get stuck in Half-Life 2: Episode 2, chapter 4

It' just after destroying combine chopper wchich was throwing mines. After that it was short speech with Alyx friends, then they told me to go ahead. But after I got out of building there is a strange area, where are plenty of zombies, however none attack me! They all try to move ahead. And there are some lasers that I can't destroy them and pass them by. What shall I do?

I give You screens - just in case.

http://img148.imageshack.us/img148/7867/ep2outland090000xr7.jpg

http://img148.imageshack.us/img148/6121/ep2outland090003dl8.jpg

http://img148.imageshack.us/img148/1263/ep2outland090006ju7.jpg

http://img91.imageshack.us/img91/8692/ep2outland090008cs7.jpg

Can anybody help me?????

Thanks in advance.

ok....

your supposed to follow that trail of cars until you get upto the the building where the lasers (which are snipers, controlled by a machine.) are coming from. Then you get on the roof of that building bust through a window, kill a whole bunch of combine and then blow up the lasers. After words alyx will come out with the car and a few rebels.

hope this helped

ok....

your supposed to follow that trail of cars until you get upto the the building where the lasers (which are snipers, controlled by a machine.) are coming from. Then you get on the roof of that building bust through a window, kill a whole bunch of combine and then blow up the lasers. After words alyx will come out with the car and a few rebels.

hope this helped

ferret837

ok, thanks, it really hoped, but how can I blow those turrets??