1.Powerlevel help u level faster with minimum death/infected etc
2.???All i can say is u get more exp.
3.Cause when u survive as a human for a round u get more exp/gp.
4.The longer the game the more exp/gp u get
5.Mostly i see lots of zombie gameplay on Papa server west(My opinion!!!)
6.Mg,Light vest,Pistol,Coloured vest(Opitional. i barley use it),Spec lol (M32,Minigun,Flame-watch out u will get kicked alot!!!,Clay,mines,sprint injection(Forgot the name lol)) ETC just fast and heavy damaging guns.