I'll tell you what's harder than fighting people, the bleeding dogs are a nightmare.
I shoot them with a sniper rifle.
I shoot them with a sniper rifle.
It's hard to use a sniper when they have already got you.
NOOOOOOOOOOB!
I have forgot about the light machine gun, I use the GSCE (sp?) and the Barrett 50.cal. Oh and Headquarters is good for levelling up.