How do you complete the last level on killzone 2

Hi,
You need to kill the first wave of Enemies on the ground floor of Vasari Palace.. In the second wave on the ground floor you will get the flame throwers.. So make sure you stay near the ammo and kill those........... After killing them, the doors for the first floow will open... Run quickly to thiose doors and reach the first floor.. Make sure you kill the flame throwers there.... You will get 3 waves of Enemies there... in second wave the enemies will reach the second floor using Stairs.. So beware of them.. Use the Grenage thrower to kill the enemies when new wave comes........ Spare some amo in grenade launcher to kill the Rocket lounching enemies.... When radec comes.. go to the first floor extreme left and use Knife to kill him.. He will come running towards you and there you need to use ur knife... After get hit by kbife for many times, he will go to the extreme end of the hall and keep firing... so hide behind the burning Carrie and aim and shoot.. RADEC will die... also you may search in Youtube and you will get the actual video also..
Cheers....