Here are the differences betwen classes: Medic:Use this if you care about the team(The ai is smarther than in raze) Bad for single missions.Killstreaks make the difference!I recommend to kill as much as possibile and use the killstreaks when it is really needed. Tank:Excellent for single missions,focused on taking as much damage as possibile,bad accuracy. Asasin:Focused on acurracy and melee damage,low health,best to find a place where you cant be stalked and snipe some enemies. Commando:focused on rate of fire/damage.Either poor damage(machine guns) either poor rate of fire(explosives) Too bad people wont see this guide after 5 comments. so pls keep it alive