To kill the mean and nasty Raam in the last level in act 5, listen up.
The only way to kill this freak is for you to go near the four tiny pillars in front (you must have the shot gun that you can find before you go in the last stage) and take out your shot.
If you have a sniper it wont be very affective so thats why I recommend the shot gun, after that start blasting him!
Then when you see his little krll come, time it right so then when the krll come close jump to the next pillar on the sides of you (make sure you have a full hand ready of grenades) cause the light that is there will keep the krll away now.
Keep blasting him and then get some grenades ready for him, dont bother going up cause Raam will just shoot you with his machine gun so you better have good aim and throw grendades at him.
After all this all you have to do is shoot a couple more rounds with the shot gun or you could use the magnum wich is twice as powerful.