Dark Sector

I play the Dark Sector, that is a XBox360 games, for 2 weeks. On this weekend, I encounter the boss in Chapter 4. It is a robot. I can not knock it down. I try to fight many times until I give up. I seach a guide book for play this games. I found it is link at http://www.mycheats.com/view/superguide/3148404/dark_sector/ps3 .

Next weekend I will destroy it, the robot that I used to loss ... u will die... 555+