Mygranmalsocps is messin with ya about the helmet an goggles increasing speed, it does NOT. (sorry to ruin ur fun man i know you were prolly getting kicks from it).
Deathdragon dont be a heavy armour noob unless you absolutly cannot play without it. If you find that you are dieing too easily throw on a sj and a suppressor (and yes put the skill points into them all the way) and you wont light up the mini map like a christmas tree, also tis the season. These guys are probably tired of answering these questions so late in the game but FEAR NOT! For i have no sarcasum glands.
Make sure you use cover by staying behing waist high objects whenever you can and do not stand still EVER! Straif straif straif!