eh, I've always been an explosives man myself. Setting up c4 and trip mines.....so when people wander into a building I have set up in, it makes me giggle. People he hope to use knives and otehr melee weapons in hopes of getting some quick and easy kills are relatively easy to ambush.
As for melee weapons themselves, I think you should have to unlck and upgrade them along with everything else. And be able to throw them too.....
As for melee weapons themselves, I think you should have to unlck and upgrade them along with everything else. And be able to throw them too.....